In a study in China, several different varieties of rice were planted in the same field. Crop yields increased by 89 percent compared with fields with a single variety of rice. This occurred because there was a dramatic decrease in disease and the fields remained stable without using pesticides. In addition, the system increased local biodiversity. This is an example of a(n) _______ showing greater productivity and stability than a(n) _______. monoculture; polyculture polyculture; monoculture natural community; agricultural community agricultural community; natural community polyculture; natural community

Answers

Answer 1

Answer:

polyculture; monoculture

Explanation:

The polyculture showing greater productivity and stability as compared to monoculture because decrease occur in disease and no pesticides are used on the field which maintain stability. The disease that is present in the field can't affect the crop of different variety due to resistance of crop against this disease or may be of some other reason. Polyculture is recommended by many researchers in order to avoid pest or pathogen infestation to the crop which leads to better productivity.


Related Questions

What is the role of producers in environment ?​

Answers

Every ecosystem is made up of three broad components: producers, consumers and decomposers. Producers are organisms that create food from inorganic matter. The best examples of producers are plants, lichens and algae, which convert water, sunlight and carbon dioxide into carbohydrates. Consumers are organisms that cannot create their food. Hope this helped!

What are the 4 most important environmental factors that influence bacterial growth?

Answers

The 4 most important environmental factors that influence bacterial growth are oxygen, temperature, water and pH.

Bacteria are unicellular, prokaryotic microorganisms that are able to survive in a lot of different conditions. They have different shapes, different modes of nutrition and lack a nucleus and membrane bound cell organelles.

The four most important environmental factors that influence the growth of bacteria are oxygen, temperature, water and pH. Different types of  bacteria types need different temperatures in order to grow. Some can survive in cold temperatures while some can even survive in very high temperatures.

Most of the bacteria survive in neutral or less acidic environments but also a lot of bacteria are able to survive in a very wide spectrum of pH. Some bacteria do not require oxygen and are hence called anaerobic while some type of bacteria need oxygen to grow and are called aerobic. Water is also required by bacteria and it boosts their growth.

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A tumor that can be removed or carved out is part of what type of cancer whats the answer!!! for a test question

Answers

Answer:

im not really sure but i think its ovarian cancer if thats in one of your options.. maybe skin cancer if its not in ur options.

Explanation:

Why are identical twins rare?


Word Bank:

gene, chromosome, reproductive cell, identical twin, fraternal twin, trait, protein, variation.

Mention:
Explain how genes are passed on normally in humans.
Explain how genes are passed on in identical twins.
Explain why identical twins are rare.

Answers

Identical twins are rare because they are generated when a fertilized egg is divided into two zygotes and thus generate two different organisms having genetically identical material. Genes are passed on normally in humans due to the inheritance from parents to offspring, they (genes) are passed on in identical twins as copies in the egg cell.

What is the proportion of identical twins in nature?

The proportion of identical twins in nature is relatively low in the order of 1 to 250, which inherit the same genes contained in homologous pairs of chromosomes, while fraternal twins denote the process of fertilization of two separate eggs to form different organisms. These genes generate different proteins that will lead to different traits.

Therefore, with this data, we can see that the proportion of identical twins in nature is low because the division of the egg cell after fertilization cell is a rare process.

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Most of the genetic disorders you have learned about are the result of a change in DNA sequence, as with cystic fibrosis, or the presence of

an extra chromosome, as with Down syndrome. The exception is Turner's syndrome. Women with Turner's syndrome have only 45 chromosomes. They are missing an X chromosome. This disorder is the only case in which a person can survive with one less chromosome.

What does this tell you about

how genetic information is inherited in humans?


Please help

Answers

The most genetic information is inherited in humans on the x-chromosome.

In bacteria, each messenger RNA (mRNA) serves as a template for the production of one or more particular proteins. Messenger RNAs (mRNAs) carry information from DNA. Translation is the process by which the primary amino acid sequence of a protein is established from the nucleotide sequence of an mRNA molecule.

Their mother passes one copy on to them through the egg, while their father passes the other one along sperm. Each egg and sperm have a single set of 23 chromosomes. Two copies of each chromosome and two copies of each gene are present when the sperm fertilizes the egg, resulting in the formation of an embryo.

Three separate processes responsible for the genetic diversity.

mutationrecombination,gene immigration

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There is a kind of snake that can be born with red, yellow, or green skin. Eagles hunt these snakes, but snakes that are the same color as their environment are harder for the eagles to see and catch.

Answers

Is this a question? If so, I don’t understand.
If it’s a true or false question then it’s true but if it’s not that type of question let me know and I’ll try to help.

The numerical ratio of velocity to speed of a moving object is
•always less than 1
•always equal to 1
•always more than 1
• equal or less than 1​

Answers

Answer: Correct option (d) Either less than or equal to one. Explanation: velocity/speed ≤ 1Read more on

Explanation:

what do you think? So why don't t apes walk upright like us?

Answers

Apes were basically monkeys. They walk on their hands and feet but crouched. There's a bunch of theories saying that humans evolved from apes. As apes evolved, they started walking upright.

^^^biology question

Answers

Answer:

A 40 percent

Explanation:

If guanine is 10 percent this means that cytosine will also be 10.thats a total of 20 percent. We will then have 80 percent remaining for thymine and adenine. As we know adenine make a bond with thymine so 80 divide by 2 is 40 percent for each

Answer:

90%

Explanation: correct awnser is b 90% because if 10% is in G then the other 90% is in A

Which of the following is an example of positive feedback
A Body shivers to generate heat
B Blood vessels dilate to lower temperature
Blood clotting
D Regulation of blood sugar

Answers

Answer:

a the body shivers to generate heat

Question:

Which of the following is an example of positive feedback?

Answer: CORRECT (SELECTED)

A blood clot inducing more blood clotting.

Explanation:

Positive feedback loops amplify the starting signal. In this case, the clotting of blood stimulates more blood to clot.

Mucous secretions in the respiratory tract inhibit microbial infections. These secretions are produced by which of the following tissue types found in the lungs ?
A. Epithelial
B. Glomerulus

Answers

Option A: Epithelial tissue types found in the lungs are responsible for mucous secretion in the lungs.

About 30% of the respiratory epithelium's total cell population are goblet cells. They create mucinogen, which when released into an aqueous environment becomes hydrated and is known as mucin. As soon as the mucin is combined with additional components in the wet environment, it is referred to as mucus. Thus, option A is the appropriate choice.

The first line of defense against the onslaught of irritants that 500 L of air an hour of air inhalation puts into the lungs is mucus secretion. The airway epithelium can be harmed by the gases, microorganisms, soot, and dust that are inhaled. As a result, mucus secretion happens extraordinarily quickly—in only a few milliseconds.

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I need help knowing what the independent variable is to this

Answers

In an experiment, the independent variable is the color or the wavelength of the light. The dependent variable is the amount of absorption.

What is Blue light therapy?

Blue light therapy is also known as photodynamic therapy. It is a type of light treatment that is used to treat diseased or damaged skin. It uses medicines called photosensitizing agents along with specific wavelengths of blue light to destroy abnormal skin cells while leaving the surrounding tissue unharmed.

Is the color of light a dependent variable?

In an experiment to determine the absorption of light of different colors, the independent variable is the color or the wavelength of the light. The dependent variable is the amount of absorption. The independent variable is the variable that the experimenter changes on their own.

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Cells actively involved in secreting proteins would contain large numbers or quantities of ________.

Answers

Cells producing huge portions of proteins would have numerous nucleoli.  One potential explanation that the proteome is such an ample deal bigger than the genome is that mRNAs can be grafted in elective ways in this manner expanding the Digi of items paid from a clear rate.

Ribosomes are especially plentiful in cells that orchestrate a lot of protein. For instance, the pancreas is answerable for making a few stomach-related catalysts and the cells that produce these compounds contain numerous ribosomes.

Cells that successfully produce proteins have various ribosomes in the cytoplasm, which give it a dull blue tone (basophilia) when stained with Wright stain. Cytoplasmic basophilia is especially unmistakable in erythroid forerunner cells when hemoglobin and other cell parts are effectively orchestrated.

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giving a large number of points to whoever answers this

Answers

31. The cell membrane is primarily made up of these - E. phospholipids

32. The hydrophilic part of a phospholipid - A. phospholipid head

33. The hydrophobic part of a phospholipid - H. phospholipid tail

34. Protein that facilitates passive transport - D. channel protein

35. Protein that facilitates active transport - J. carrier protein

36. Molecule that stabilizes the membrane - G. cholesterol

37. Molecule that aids in cell recognition and signaling - I. carbohydrate molecule

38. A substance that can undergo facilitated diffusion - C. negatively charged ions

39. A substance that undergoes active transport - F. positively charged ions

40. Cellular energy needed for active transport - B. ATP

What are phospholipids?

Phospholipids are the main lipid that is found in the cell membrane.

The structure of phospholipids is that they have a hydrophilic head group and a hydrophobic tail.

They are arranged in the form of bilayers in cell membranes.

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Explain how abiotic factors can have influence on the survival for individuals through natural selection.

Answers

Selection: Organisms live within ecosystems, which are made up of various biotic and abiotic factors. These factors contribute to selecting which variations provide the individual with an increased chance of surviving. ... Examples of abiotic factors include temperature, shelter, sunlight, water and nutrients.

Answer:

Biotic and abiotic factors are the environmental conditions that the organisms have to face to live in a specified environment.

Abiotic factors

Abiotic factors are the physical and chemical conditions of an environment. For example : heat, salinity, pressure, light, wind, pH ...

Biotic factors

Biotic factors are all the biological conditions of an environment for a specie/taxa. It can include prey and predator abundance, available food amount, available space, intra and interspecific competition...

The development of organims is under the control of abiotic factors. Some are adapted to heat, cold etc ... The abiotic factors will define which organisms are able or not to live in a specified place.

The living organisms will constitute the biotic factors, which define if and how can an organism live in a specified environment.

So, the abiotic factors are controling the biotic factors of an environment.

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A botanist crosses two pink-flowered plants. The cross is a case of intermediate inheritance that involves alleles that were not clearly dominant or recessive and could make red-, pink-, and white-flowered plants. If four plants are produced from the cross, what is the expected number of white-flowered plants?
A-1
B-0
C-3
D-2

Answers

A:1 why because when crossing u get one white 2 pink and 1 red

What is the role of nitrogen-fixing organisms?

Answers

Answer:

Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen.More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.

How will the positive and negative transcription factor help maintain the homeostasis of the body system. Explain with an example

Answers

The positive transcription factor will help in maintaining the stimulus for homeostasis or even accelerate it. Whereas the negative transcription factor will oppose the effect of the stimulus, it can either increase it or decrease it.

Homeostasis is the maintenance of a steady and equilibrated physical, chemical and internal state of the body. The example of positive transcription factor is: activation of one clotting factor in the body initiates a cascade for the activation of all the other clotting factors.

Negative transcription factor has the example of blood glucose levels of the body. If the level increase transcription factors cause the release of insulin from the pancreatic cells to maintain the homeostasis.

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What is an example of a behavioral adaptation in animals?

Answers

Explanation:

Behavioral adaptation is something an animal does usually in response to some sort of external stimulus in order to survive. Hibernating during winter is an example of a behavioral adaptation,this is common among bears.

An immune response ends with the organism developing immunity for all pathogens *

True
False

Answers

Answer:False

Explanation:

Like zombies something new will become a pathogen and for some the effects can not be completely immune.

I think the answer is false

The illustration shows structures into animals these are known as??? helpp

Answers

D. Homologous structures

What does disease mean?

Answers

Answer:

(Desease) mean that its a flue..some of animals have deseases even humans and other.. example of deases are CANCER IN bones etc..)

Explanation:

Hope it helps!!

Answer:

The condition of malfunctioning or unusual functioning of body or organs is known as disease. it might be due to genetic, pathological or physical reasons or even due to lack of intake of proper diet and lack of enough sleep. it is classified into two types:

communicable and non communicable.

Explain how an ecosystem that has experienced a disruptive event, such as a volcano, recovers. Read More >>

Answers

An ecosystem that has experienced a disruptive event, such as a volcanic eruption, will take time to recover from the effects of the disruption. The recovery process of an ecosystem is a complex, interconnected process between the biotic and abiotic components of a system. The recovery process that follows a disturbance varies depending on the type of disruption and the environment in which it occurs.

When a volcanic eruption occurs, it can release a great deal of ash and debris into the environment, and the effects can be devastating. The ash and debris can severely damage the terrestrial and aquatic ecosystems in the surrounding area, resulting in a loss of habitat, food sources, and other important resources. Additionally, the ash and debris can block sunlight and reduce photosynthesis, which can lead to a decrease in plant growth and a disruption of the food web.

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Based on the data in Table 1 and the biomass of the very large animals eaten by the lions, predict the likely effect on both the lions and leopards if the availability of the very large animals becomes limiting in the reserve. After analyzing the data, the scientists claim that the leopards and lions coexist in the reserve through the use of niche partitioning. Use evidence from the data provided to support the scientists’ claim.

Answers

Answer:

Explanation:

An ecological community can be described as all the different species of organisms i.e all the different plants and animals, living in a particular habitat at a specified time. An ecological community will consist of: Predators: Organisms which feed on other organisms.

Is calico genetically dominant or recessive?

Answers

The calico cat displays a mixture of red- and black-based colors, depending on which of its two X chromosomes has been inactivated. The allele coding for orange hair color is dominant, while the allele for black color is recessive - although this doesn`t matter much since only one allele is expressed.

Because the genetic determination of coat colors in calico cats is linked to the X chromosome, calicoes are nearly always female, with one color linked to the maternal X chromosome and a second color linked to the paternal X chromosome.

To create a calico (or tortoise-shell) pattern, one of the X chromosomes must carry the black gene and the other the orange gene. If a black male and an orange female mate, the result will be a half-black and half-orange female offspring-a calico. A black female and an orange male will also produce a calico female.

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Alleles are different versions of:

Genotypes

Genes

Chromosomes

Phenotypes

Answers

Answer:

Genes

Explanation:

Explain how artificial selection could lead to a change?

Answers

Answer:

While artificial selection is certainly a form of experimental evolution, often the meaning of the term 'experimental evolution' is confined to controlled natural selection, excluding artificial selection

Explanation:

Drag each label to the correct location.
Geologists study a variety of other characteristics to identify minerals, such as texture, magnetism, streak plate markings, density, and specific gravity. Use the information you have already gathered, in addition to a few other properties of minerals, to identify the seven minerals in the chart below. If you need help using the graduated cylinder or scale, consult the lab instruments and measurements guide. If you do not have access to the seven minerals given, use this resource to complete the chart.

Answers

Answer:

quartz gypsum pyrite magnetite graphite fluorite talc

Explanation:

How much greater are the discharge rates than the recharge rates of the Ogallala Aquifer?

Answers

The recharge rate of the Ogallala Aquifer is estimated to be between 0.1 and 0.2 inches per year.

What is Ogallala Aquifer?

The Ogallala Aquifer is a vast underground aquifer system located in the Great Plains region of the United States. It is one of the world's largest aquifers, covering an area of around 174,000 square miles across eight states, from South Dakota to Texas. It is an important source of water for agricultural, industrial, and municipal uses.

The discharge rate is estimated to be between 0.3 and 0.6 inches per year. This means that the discharge rate is between three and six times greater than the recharge rate.

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how does your adrenal gland and pineal gland help you maintain homeostasis?

Answers

The adrenal gland helps to maintain homeostasis by producing hormones that regulate metabolism, stress response, and other bodily processes.

What exactly is homeostasis?

Homeostasis is the ability of a living organism or system to regulate its internal environment to maintain a stable equilibrium, such as temperature or pH, despite changes in external conditions. It is a crucial factor in allowing organisms to function normally in their environment.

The pineal gland helps to maintain homeostasis by secreting melatonin which helps to regulate the body’s circadian rhythm and helps to regulate sleep and wake cycles. Together, these two glands help to keep the body in a balanced, homeostatic state.

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800 miles in 5 hours miles per hour PLEASE HELP ME Which of the following detailsis unclear or uncertain afterreading the excerpt?A. )Rochester is someoneJane can trust.B.) Jane is unsure if sheloves for Rochester.C.) Rochester will now leavehis wife for Jane.D.) Jane is determined tostay and marryRochesterThe passage is " Sorry but Jane Eyre isn't the Romance you want it to be " by Erin Blackemore Cell wall hut not cell,Robert Hooke discoveredOrganelles. What are the 11 barriers of communication? PLEASE HELP ME WITH THIS QUESTION AND ILL BRAINLIEST YOU In a school containing 360 children, 198 are girls. What percent of all children are girls? What percent of the children are boys? The number of girls is what percent of the number of boys? The number of boys is what percent of the number of girls? the number of girls is _____% of the number of boys. Trevor used a basic fact to find 120 , 4. Which basic fact could Trevor have used? 100 4 12 3 12 4 20 4 Jeremiah completed a straight, 120 km drive in 1.5 hours. At one point during the drive, he saw that his speedometer read 105 km/h. Which of the following statements are accurate?His average velocity was 105 km/h.His instantaneous velocity was always 105 km/h.His instantaneous velocity was always 80 km/h.At one point, his instantaneous velocity was 105 km/h.His average velocity was 80 km/h. Write an equation in point-slope form of a line that has a slope of -4 and passes through the point (2, 1) Huilan is 7 years older than Thomas. The sum of their ages is 79. What is Thomass age? In the sequence generated by the formula an=(-1)n+1(5)n , which of the following terms has the greatest value? Assume an > 0. In the sensorimotor stage, babies know using their ________ , so whatever they don't perceive doesn't exist for them what is bill in social? Sally is planning the school picnic and needs to decide what food vendor to use. She asks 250 students whether they would rather have a taco truck or a fruit smoothie cart. The results of the survey are shown in the table. Taco truck Fruit smoothies Total Eighth-graders 75 45 120 Ninth-graders 105 25 130 Total 180 70 250 What is the relative frequency of eighth-graders who want fruit smoothies? Find m BAD. DAC=23 DC=7 BD=7 Select the correct text in the passage.Which sentences in the passage describe the correct method of inventory planning?Austin and Carter are managers in different warehouses. Austin plans his inventory such that he can have as large a stock of raw materials, work-in-process (WIP), and finished goods as possible. Carter plans his inventory so that the optimum quantity of raw materials, WIP, and finished goods allow for the smooth movement ofmaterials at each stage of production. Austin incurs a high inventory storage cost. Carter manages to keep the inventory storage cost low. by10. The flashlight should bePart II. Rewrite the following sentences, adding appositive phrases as specified in parenthesis. Punctuate theappositive phrases used and underline them. (Note: You can add appositives after any noun in the sentence.)Example: The girls went to the park. (Begin your appositive with a negation.)Answers: The girls, not the boys, went to the park.orThe girls went to the park, not the museum.11. Tom turned the car to the left. (Begin your appositive with a negation.)12. The smugglers took the contaminated fish to market. (Begin your appositive with the word "fish.")13. The pilot ate his dessert while he was piloting the plane. (Begin your appositive with the"something.")14. The students entered the talent show. (Begin your appositive with the connective word especially.)15. The woman drank tea before sleeping. (Begin your appositive with the word "tea.")16. The boys choose to go watch action movies. (Begin your appositive with the negation "never.")17. Doughnuts are often high in fat. (Begin your appositive with the pronoun "the kind.")18. The dinner was given by the people at the church. (Begin your appositive with the connective "mainly.")pronoun Which example is the site of reduction when the dry cell is operating Can someone help me with this? Its due today and Im du/mb and don't know the endings Please and thank you!!! =D Mucous secretions in the respiratory tract inhibit microbial infections. These secretions are produced by which of the following tissue types found in the lungs ?A. EpithelialB. Glomerulus