Wastes from aquatic organisms is not a pollutant of Chesapeake Bay .
Major contributors to the poor health of Chesapeake Bay are nitrogen, phosphorus, and sediment. High levels of nitrogen and phosphorus fuel unnaturally high levels of algae growth in the water, blocking sunlight from reaching underwater grasses that serve as food and habitat.What is pollutant?A pollutant is a substance that is present in concentrations that may harm organisms (humans, plants and animals) .It exceed an environmental quality standard. The term is frequently used synonymously with contaminant.To know more about pollutants here
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Which two scientists' experimentation and hypotheses led to an understanding of the presence of microorganisms and their relationship to diseases?
Answer:
Robert Koch and Louis Pasteur.
Explanation:
Robert Koch and Louis Pasteur are the two scientists' who discover the presence of microorganisms and their relationship to diseases. In 1876, Robert Koch performed experiments and made a hypothesis that microbes can cause disease in humans and other organisms while on the other hand, Louis Pasteur performed many experiments between the years 1860 and 1864 and made a hypothesis that the puerperal fever happens due to the infection of pyogenic vibrio in the blood.
How can the current in a wire near a magnetic field be changed?
A.
The wire can be moved in and out of the magnetic field.
B.
The strength of the magnetic field can be varied.
C.
The distance between the magnet and the wire can be altered.
D.
all of the above
Answer:
all of the above (d) is right
does the type of potting the soil used in planting affect how fast the plant grows
Answer: Yes, the type of soil does effect how the plant grows.
Explanation:
NEED HELP ON THIS ASAP!!!
Fuel of last resort:
This happens if the body goes into "__________________" mode. First the ________________ muscles are consumed, leading to ___________________. Once those are depleted, the body starts consuming the ___________, at which point the person dies. Our body can consume about ______ of our muscle before we die
This happens if the body goes into "starvation mode." First the tissues of muscle are consumed, leading to muscle wasting. Once those are depleted, the body starts consuming the organs, at which point the person dies. Our body can consume about half of our muscles before we die.
When your body enters a state of starvation, it begins by consuming the tissues of muscle, leading to muscle wasting.
This can occur to the point where nearly half of your muscles are depleted before death. Once those are gone, the body will start to consume organs, and ultimately the person will die.
That is why it is important to make sure you are getting the necessary nutrients and energy to keep your body functioning properly.
In this mode, the body begins to consume its own tissues, starting with the muscles.
This can lead to muscle wasting, and once the muscles are depleted, the body begins to consume the organs. Unfortunately, our body can consume about half of our muscles before death occurs.
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source of food and role in the body of protein
Protein is important for growth and repair of body cells. Food sources of protein include meat, fish, dairy, lentils, beans, and tofu. Insufficient protein can lead to low growth and a weakened immune system. Excess protein may lead to weight gain and liver problems.
Answer:
here is your answer
Explanation:
Protein is important for growth and repair of body cells. Food sources of protein include meat, fish, dairy, lentils, beans, and tofu. Insufficient protein can lead to low growth and a weakened immune system. Excess protein may lead to weight gain and liver problems.
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An injury to the spinal cord at the________ level may be fatal because control of the muscles of breathing arise from the spinal cord at this level.
Answer:
Im fairly sure this is the cervical level
An injury to the spinal cord at the [tex]\sf\purple{cervical}[/tex] level may be fatal because control of the muscles of breathing arise from the spinal cord at this level.
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Recently it was discovered Burmese python pet owners were releasing their unwanted reptiles into the Florida Everglades, which are highly
protected and are an important habitat for endangered species. Unfortunately, it took years for biologists to realize the devastating effects
the large snakes would have on this ecosystem.
Which of the following is a valid concern biologists should have regarding the invasion of the python into the everglades, and
how should biologists work to fix the issue?
A Concern: Pythons consume alligator eggs.
Solution: Blologists should build protective barriers around alligator nests.
B. Concern: Pythons consume fish and interfere with commercial fishing,
Solution: Blologists should restock the everglades with more fish.
c. Concern: Alligators consume pythons.
Solution: Biologists should work to capture alligators to help build python populations.
D. Concern: Panthers consume python eggs.
Solution: Biologists should work to capture panthers to help build python populations.
Option (A) is a valid concern because the loss of alligator eggs can affect the population of alligators and other species that rely on them as a food source.
What is a population?In biology, a population refers to a group of individuals of the same species that live in a particular geographic area and can interbreed with each other. The size of a population is determined by the number of individuals in the area and can be affected by factors such as births, deaths, immigration, and emigration.
Studying population dynamics is important in understanding how populations change over time and how they interact with their environment. This information can be used to inform conservation efforts and management of wildlife populations, as well as understanding how changes in the environment or other factors can impact populations.
This is a valid concern because the loss of alligator eggs can affect the population of alligators and other species that rely on them as a food source. Biologists can work to fix this issue by building protective barriers around alligator nests, which can prevent pythons from accessing the eggs.
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The average speed of a dung beetle is 0.50 m/s. A piece of dung is located 10 m from thebeetle. How long will it take for the beetle to reach its hearty meal?
Answer:
20
Explanation:
time-= distance / speed
10m/ 0.50m/s= 20
What are the 5 factors of natural selection?
Answer:
Variation, Inheritance, Selection, Time and Adaptation.
Explanation:
Write any two advantages of transpiration to a plant .Given below is a set of five terms. Rewrite
the terms in logical sequence as directed at the end of the statement.
Stoma, mesophyll cells, xylem, substomatal space, intercellular space (loss of water due to
transpiration)
Answer:
Transpiration:
Losing the water absorbed by the plant through its aerial parts in the form of water vapor to the atmosphere. Water is absorbed by roots from the soil and transported as a liquid to the leaves via the xylem to mesophyll cells, through intercellular spaces, and moving through substomatal space to the stoma. The leaves and aerial parts have small pores that allow water to moves as a vapor.
Advantages:
With the transpiration exchange of gases also takes place.
Excess amount of water removed from the plant body.
Absorbing water and distribution of water among plant body parts
Cooling the exposed aerial parts of the plant to the sun and warm winds.
The osmotic balance of the plant cell is regulated by the process of transpiration.
The logical sequence in order to loss of water due to transpiration is as follows:
xylem, mesophyll cells, intercellular spaces, substomatal space, stoma.
The ability of a lung to recoil, or recover from stretch, is called ________.
Elastance is the capacity of a lung to recoil or rebound after strain.
What use does the lung serve?Respiration, a mechanism of gas exchange, is the major purpose of the lungs (or breathing). During breathing, Co₂, a metabolic waste product, exits the bloodstream while oxygen from air flowing enters. Reduced lung effect can be attributed to the lungs' diminished capacity to exchange gases.
Do your lungs allow us to survive?Typically, you need one lung or more to survive. In one instance, a patient had to have both lungs extracted and it was maintained alive for six days on life support before receiving a lung transplant. Since one needs both lungs to survive, this is not a routine treatment.
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Please help me with this!!
The answers to the table are genotype, phenotype, trait, heredity, chromosome, allele, in that sequence.
How does a chromosome explain work?
a component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome. There are typically 23 pairs of chromosomes in each cell.
What is a chromosome's primary purpose?
DNA may be precisely duplicated during these cell divisions thanks to chromosomes. So, once more. Our cells' nuclei include chromosomes, which enable precise DNA duplication during cell division. This guarantees that our internal processes go smoothly and effectively.
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Which one of these processes is not a chemical weathering process?
Carbonation
Hydration
Oxidation
Frost Wedging
Answer:
frost wedging
Explanation:
Answer:
Frost Wedging
Explanation:
Bcoz Expect Frost Wedging all of remaining are chemical weathering process...
Can someone help please!! ‼️‼️‼️
Answer:23,46 in that order and dominant
Explanation:
Although genetic mutations may occur spontaneously in organisms, the incidence of such mutations may be increased by
Although genetic mutations may occur spontaneously in organisms, the incidence of such mutations may be increased by Mutagenic agents.
Mutagenic compounds, commonly referred to as mutagens, are what cause mutations. A mutagen is a substance that increases the frequency at which mutations happen. The process through which a mutagen causes mutations is known as mutagenesis.
The term "mutation" is frequently used to describe an inherited change in DNA structure that does not result via genetic recombination. An organism with one or more mutated genes is referred to as a mutant. A mutation may change a gene's mode of expression, changing the mutant's phenotype from the one it originally assumed. Mutations can be either spontaneous or induced. Using mutation interrogation techniques, only the presence or absence of known DNA sequence changes may be determined. In lab settings, they are used to analyse a particular group of CFTR mutations that make up a CF test panel.
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Please place answers under questions so I know which is which. Thank you! :)
What reactants are used in light-dependent reactions (photosynthesis)?
What reactants are used in light-independent reactions (photosynthesis)?
Word Bank:
Reactants: ADP, ATP, Carbon Dioxide, NADP+, NADPH, Sunlight, Water
Reactants used in light- dependent reactions : Carbon dioxide, sunlight and water.
Through tiny holes in their leaves known as stomata, plants absorb carbon dioxide from the atmosphere. Most monocot plants have stomata on both surfaces of their leaves, while dicot plants and a few monocots only have stomata on the bottom epidermis of their leaves.Plants obtain water from the soil around their roots, and water travels via the xylem, a component of the plant's vascular system, to reach the leaves. The vascular bundle in leaves houses the xylem and phloem.The carbon dioxide and water molecules enter the leaf and then migrate into the cells of the mesophyll, the ground tissue layer that lies between the top and lower epidermis. These cells perform photosynthesis using water and carbon dioxide in organelles known as chloroplasts.Reactants used in light- independent reactions : ATP, carbon dioxide, NADPH.
The assembly of a glucose molecule is the final step in the light-independent processes, also known as the Calvin cycle. This stage of photosynthesis necessitates the CO2 that the plant absorbs from the atmosphere.In essence, the plant requires the carbon in the CO2 to make the components of glucose. RubP (ribulose biphosphate), a molecule with five carbons, and a molecule of carbon dioxide are combined by an enzyme called ruBisCo in the stroma. As a result, a six-carbon molecule is produced, which is then split into two three-carbon molecules (3-phosphoglycerate). The term "carbon fixation" refers to this phase of the light-independent processes.Then the light-dependent processes' energy carriers start to contribute. By adding a hydrogen atom to each 3-phosphoglycerate, ATP and NADPH produce two molecules of the simple sugar G3P. (glyceraldehyde-3-phosphate). In the end, one molecule of glucose is created from these two G3P molecules. Due to the addition of electrons, this phase of the light-independent processes is commonly referred to as reduction (or decreasing the sugar).What are the factors that influence sex?
An Individual's sexual behavior is influenced by a complex interplay of biological, psychological, social, cultural, relationship, and environmental factors.
There are many factors that can influence an individual's sexual behavior, including:
Biological and hormonal factors, such as age, gender, and reproductive statusPsychological factors, such as personality, mood, and mental healthSocial and cultural factors, such as family values, religion, and cultural normsRelationship factors, such as attachment, trust, and communicationEnvironmental factors, such as access to contraception, education, and socialization on sex, and laws and policies related to sex.It's worth noting that these factors can interact with one another and can change over time, making it difficult to predict an individual's sexual behavior with certainty.
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Directions: Select each correct answer. More than one answer may be correct.
During which of these processes is oxygen consumed?
when forests are burned to clear land for farming
when aerobic bacteria break down dead algae in a pond
when plants perform photosynthesis
when plants or animals perform aerobic cellular respiration
the sympathetic trunks are located immediately lateral to the ______.
The sympathetic trunks are located immediately lateral to the vertebral bodies of the vertebral column.
Sympathetic trunks are two ganglionated nerve trunks that form the bundle of nerve fibers paired together and run from the base of the skull to the coccyx.
This sympathetic trunk lies just lateral to the vertebral bodies for the entire length of the vertebral column.
Sympathetic trunks are a fundamental part of the sympathetic nervous system while also being a part of the autonomic nervous system. They allow both superior and inferior nerve fibers to travel to the spinal cord to commence the regulatory actions in the body.
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HELPP!!!
According to the definition of Natural Selection, which of these
organisms is likely to survive?
A- An organism that inherited features that they can and cannot use.
B- An organism that will benefit the Consumers.
C- An organism with adaptations best suited for their environment.
D- An organism that has the greatest number of offspring.
According to natural selection the organism most likely to survive is C- An organism with adaptations best suited for their environment.
Natural selection is the process by which certain traits become more or less common in a population over time as a result of the effects of reproduction, migration, and genetic drift on the survival and reproduction of individuals with those traits.
This process can eventually lead to speciation when populations specialize for specific ecological niches over time (microevolution) (the emergence of new species, macroevolution).
The process of natural selection starts with genetic variation within a population. This variation can occur due to mutation, recombination, and genetic drift. Some individuals in the population will have traits that are better suited to their environment, making them more likely to survive and reproduce. These individuals will pass on their advantageous traits to their offspring, who will also have a better chance of survival. Over time, the proportion of individuals with advantageous traits will increase in the population.
When the organism is well adapted to the environment then they can tolerate the environmental extremes to a better extent thus, able to survive and pass onto there gene to next generation. The adaptation help the organism to mold themselves according to the needs of the environment, thus better chances of living.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
It's A.
Explanation:
Because owls and hawks have different Pray to catch and different species
Ji wants to write an example of a frameshift mutation using the following sentence: THE CAT SAW THE RAT. Which sentence best shows a frameshift mutation?
THC ATS AWT HER AT.
CAT THE SAW RAT THE.
EHT TAC WAS EHT TAR.
THE THE CAT SAW THE RAT
The frameshift mutation is THC ATS AWT HER AT. So, the correct option is (A).
What is Frameshift mutation?A frameshift mutation is defined as a mutation that can occur in a DNA sequence which is considered a frameshift, because it changes the frame of the sequence, changing the way it will be processed.
There are three causes which can cause frameshift mutations:
InsertionDeletionDuplicationFor the example above, the letter "E" was removed from our original sentence which is an example of a deletion which can be seen as a frameshift mutation because by removing a letter which makes the sentence and completely alters our ability to process. ,
Thus, the frameshift mutation is THC ATS AWT HER AT. So, the correct option is (A).
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Which one of the traits listed below is not used to define the order Primates?
a. a tendency towards erect posture
b. an inflexible, specialized limb structure
c. hands and feet with a high degree of prehensility
d. retention of five digits on the hands and feet
e. generalized dentition
A stiff limb structure that performs specific tasks The following characteristics are not used to classify the primate order.
What characteristics do primates possess?The primates are distinct from less developed animals in that they show distinctive characteristics. They include huge brains, superior eyesight, arboreal adaptation, opposable thumbs, and greater shoulder range of motion. The primates which are most commonly seen include gorillas, monkeys, and apes.
What four characteristics do primates possess?The ability to sit for extended periods of time inside an upright position without relying on the upper limbs for rebalancing, dependence on vision, and diminished sense of smell are all traits that are derived from primates. Other traits include the prehensile finger and big toe, proboscis legs and hands, nails rather than claws just on digits, and the ability to walk upright.
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Reasons that the population size of an exotic species often grows rapidly when the species is introduced in a new environment include which of the following?
I. The exotic species is resistant to pesticides.
II. There is a large, underutilized food source in the new environment.
III. The exotic species has few natural predators in the new environment.
(A) I only
(B) II only
(C) I and III only
(D) II and III only
(E) I, II, and III
Reasons that the population size of an exotic species often grows rapidly when the species is introduced in a new environment include II) there is a large, underutilized food source in the new environment, III) the exotic species has few natural predators in the new environment. Hence, option D is correct.
The introduction of an exotic species into a new environment can often cause a rapid population growth due to several key factors.
One of these is that there tends to be a large, underutilized food source in the new environment which the exotic species can take advantage of. Another factor is that the exotic species may have few natural predators in the new environment, allowing them to thrive without fear of predation.
As a result, these two factors can lead to a rapid population growth of an exotic species when it is introduced into a new environment.
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Which of the following general mechanisms appear to be involved in the formation of cancer cells?
A) Genomic instability, DNA repair failure, chromatin modifications.
B) Inversions, operon formation, methylation.
C) RNA failure, DNA phosphorylation, phosphorylation of adenyl cyclase.
D) Transdetermination, mutation, allosteric interactions.
E) Suppression, tabulation, projection.
Cancer is brought on by cells that divide out of control and invade surrounding tissues. Cancer is mostly brought on by DNA changes. The majority of DNA mutations that result in cancer occur in areas of DNA called genes.
What precisely does DNA mean?DNA, commonly referred to as deoxyribonucleic acid, is the genetic material carried by humans and nearly everything else organisms. A person's DNA is present in almost all of their cells.
What does DNA do and what is it?DNA is the molecule of information. It provides the knowledge required to produce proteins, another type of substantial molecule. Each of your cells contains 46 substantial objects set of chromosomes that are distributed throughout these instructions. These chromosomes are made up of numerous smaller segments of DNA, called genes.
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need this answer quick please thanks
Answer:
Meiosis
Explanation:
Meiosis results in 4 cells.
As a result of the cascade of electrons moving down the electron transport chain and leaving the light reactions A) NADP+ is reduced to NADPH. B) NADP+ is oxidized to NADPH. C) NADPH is reduced to NADP D) NADPH is oxidized to NADP to ATP, chloroplasts transform
As a result of the cascade of electrons moving down the electron transport chain and leaving the light reactions NADP+ is reduced to NADPH.
Light-dependent reactions are jargon for certain photochemical processes that occur during photosynthesis, the primary mechanism by which plants obtain energy. The first light-dependent reaction happens in photosystem II (PSII), while the second occurs in photosystem I. (PSI),
PSII absorbs a photon to form a high energy electron, which travels through cytochrome b6f and ultimately to PSI via an electron transport chain. The reduced PSI then absorbs another photon, resulting in a more strongly reducing electron that transforms NADP+ to NADPH. In oxygenic photosynthesis, the first electron donor is water, creating oxygen (O2) as a by-product
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How long do you think it took to develop the mRNA vaccines? and why? PLEASE HELPPPPP
What are some of the factors that can affect a change in the frequency of genetic alleles in a population?
Genetic drift, natural selection and gene flow are some of the factors that can affect a change in the frequency of genetic alleles in a population.
Alleles are basically two or more versions of the same gene present in the DNA. Allelic frequencies basically determine the number of times a particular allele of a gene is found in a specific population. The allelic frequency of a population changes over time and is dictated by a few factors like natural selection, gene flow and genetic drift.
Natural selection is the process by which the organisms which have desirable characteristics are able to survive over the ones who do not. Genetic drift is the process in which a change in allelic frequency is observed due to chance. Gene flow is when there is a movement of genes in and out of a particular population.
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If a classification, such that used to identify insects or rocks, is used in a scientific context, it is most often called a(n) ________
Taxonomy is a classification, such that used to identify insects or rocks, is used in a scientific context .
Studying living things including animals, plants, microorganisms, and people in order to categorise them and increase our understanding of them is known as taxonomy. For instance, although from some views humans and whales are separate animals, both are classified as mammals and share a common ancestor.
Taxonomy is the approach and guiding principles of systematic botany and zoology. It organises different plant and animal species into hierarchies of superior and inferior groupings. In the science of taxonomy, all living things, including plants, are named, described, and categorised. Classification is based on variances in behaviour, genetic makeup, and biochemistry. The steps of taxonomy are characterization, identification, and categorization.
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