Which of the following does not contribute to bacteria's ability to evolve rapidly? A)Sexual reproduction. B)Genetic recombination. C)Mutation

Answer:

Healthy volunteers in phase 1 clinical trials are used for the development of safe drugs and other biologics by accepting the possibility of risks from study participation without anticipated health benefits from the investigational products. The incidence of serious adverse events is low.

Answer:

A molecule of natural gas is made up of carbon and hydrogen. When the hydrogen is segregated from the carbon and filled into a fuel cell, it fuses with oxygen to produce water, electricity, and heat. The carbon is released as carbon dioxide in smaller quantities than from gas turbines

Explanation:

Answer:

Level A, though some people call it different things.

Explanation:

The answer will be the lowest number/letter, as they are at the bottom of the food chain.

Whales are mammals, not fish. This means that, like all land mammals, they breathe oxygen through their lungs.

Whales and dolphins are mammals, and like us, they breathe air into their lungs. Because they do not have gills, they cannot breathe underwater like fish. Whales are mammals just like humans. Therefore, they have lungs and breathing air on their surface. It cannot extract oxygen from water like fish do with their gills. Whale inhalation is "conscious". The respiratory function of these animals is under the voluntary control of the central nervous system "CNS".

Whales accumulate carbon in their bodies during their long lifespans. When they die, they sink to the bottom of the ocean. Each large whale binds an average of 33 tons of carbon dioxide and removes this carbon from the atmosphere over centuries. Trees, on the other hand, only absorb up to 48 pounds of CO2 per year

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Answer:

I think B. They are divided.

Doubling the chromosomes of a sterile species hybrid with colchicine or cold shock is a method used to produce a fertile species hybrid called a amphidiploid .

Another type of aneuploidy is monosomy, or the loss of one chromosome in cells. "Mono-" is Greek for "one," therefore patients with monosomy have one copy of a certain chromosome in their cells rather than the customary two copies.

Turner syndrome (also known as monosomy X) is a monosomy-related disorder.

The embryo's tissues will contain higher-than-normal quantities of the Gene P protein product.

Triploidy is the presence of an extra pair of chromosomes in the cell, resulting in a total of 69 chromosomes rather than the standard 46 chromosomes per cell. During fertilization, the additional pair of chromosomes is derived from either the father or the mother.

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Answer:

D cause not all stages of meiosis follow DNA replication.

Gastric emptying is affected greatly by the volume of fluid ingested. The correct option is Option A.

Gastric emptying is a test that helps to measure the time it takes the food to empty the stomach and small intestine. This test is often done to find out the reason for vomiting, having stomach pain or not gaining weight.Normally it takes 1.5 -2 hours for the food to move out of the stomach and into the small intestine.

But when the stomach takes longer than normal to empty it is called gastroparesis.

But a condition in which food , especially food with high sugar content , moves from the stomach into the small intestine too quickly after you eat, then this condition is called Dumping syndrome. It occurs mainly as a result of surgery on our stomach or esophagus.

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Answer: B) the angle of insolation is high

Explanation:

During that time the Earth is facing the sun at a closer angle. So the chances of incoming solar radiation will be higher.

In New York State, the risk of sunburn is greatest between 11 a.m. and 3 p.m. on summer days because  the angle of insolation (incoming solar radiation) is high. The correct answer is option B.

The duration of sunlight reaching the Earth is approximately 9 seconds.

Angle of insolation is defined at the angle at which the sun's rays strike a particular surface on Earth in order to receive the sun rays and get the heat out from  the sun.

At the angle of 90 degrees it is directly receiving the light from sun at equator and the solar radiations are all gathered at one particular surface thus making the surface a little hot.

The sun strikes at 23 approximately at the tropic of cancer thus this will receive the maximum of heat from sun.

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Yes, I have heard the terms structure and function used before. The two structures I identified in my classroom were:

In the modern classroom, structures are essential for an effective learning environment. Structures provide the necessary framework for students to work and learn, while also providing teachers the necessary tools to facilitate learning. Without the right structures in place, learning quickly becomes difficult and inefficient.

Desks are some of the most crucial structures in a classroom. A student's desk provides them with a stable, elevated surface to write and study on. Having a desk allows students to spread out their materials and have easy access to them whenever they need them. It also gives them a designated workspace to stay focused and organized.

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Mendel conducted research on inheritance using peas. Peas were selected because they had previously been used in research that was comparable, because they are simple to cultivate, and because they can be replanted annually.

Pea flowers typically self-pollinate because they contain both male and female parts, which are referred to respectively as stamen and stigma. Because of the process of self-pollination, offspring can be produced from a single plant even though the flowers do not open until later. Peas can also be manually cross-pollinated.

To do this, simply open the pea flower buds, remove the pollen-producing stamen, and then apply pollen from one plant to the stigma of another plant. This will prevent the peas from pollinating themselves.

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If the population size of a predator increases the prey population will decreases in size.

Predator-Prey relation refers to the interaction between two species where former is hunting the latter for food.

Example- Lion-Zebra, Bear-Salmon

Predator and Prey respond dynamically to one another. Higher the number of prey it will help to support the higher number of predators.

The key aspect of Predator- Prey relationship is the direct effect the predation has on numbers of their prey.

Predator- Prey relationship depends upon

- Detection of the prey

- Pursuit and capture of the prey

- Feeding

The fluctuation in the numbers of a predator species and its prey that occurs over time represent Population Dynamics.

As the prey population decreases due to predator killing, the food available is less and thus the number decline.

The process reverses when the population of predators increases putting population of prey at stake and once the population of prey decreases it eventually result into decrease in the population of the predators as their is not enough population of prey to thrive upon for predators.

Impact:

1. According to Evolution, the predator-prey relationship continues to be beneficial as both the species adapt to ensure they feed without becoming meal for another predator.

2. Maintenance of Biological Diversity of the particular ecosystem and helping to keep the ecosystem stable.

3. The balance of Predator- Prey can be disrupted due to climate change and changes such as drought, urban development, foresting and overuse of resources.

4. Predator- Prey population dynamics can be useful in indicating whether the population of a species could tax the capacity of a particular ecosystem to support their numbers.

5. The knowledge of Predator- Prey population can be used in determining the number of prevailing diseases.

Thus Predator-Prey relations plays vital role in maintaining ecosystem sustainable and balance and any shift in balance would result into disruption of the stability of the ecosystem.

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Answer:

Tropical areas are warm and wet causing for animals to want to hide essentially. Also there is a lot of cover for animals to hide in. Usually in tropical areas there are a lot of predators also, another reason for animals to hide.

The sickle-cell gene does not benefit anyone in the United States, but it may be very advantageous to someone living in rural Zambia, Africa because Malaria is rare in the United States

Sickle cell disease: A group of disorders in which

red blood cells deform and collapse. In sickle cell disease, a group of inherited disorders, red blood cells twist and sickle. Cells die prematurely, lacking healthy red blood cells (sickle cell anemia) and can block blood flow and cause pain (sickle cell disease).

In parts of Africa where malaria is common, the sickle cell disease mutation confers a health benefit to carriers (protection from malaria). HbS carriers were naturally selected in these regions because their traits confer some resistance to malaria. Red blood cells with abnormal hemoglobin tend to sickle when infected with the malaria parasite.

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Answer:

E. Predation

Can I please get this to be a brainliest answer :)

Plzzz!!!!

Answer:

Predation

Explanation:

Help me get the brainliest answer pls ^^

Answer:

Better Irrigation can help preserve both energy and water, given the fact that if irrigation precision with respect to the amount of water a plant needs, is timed perfectly each day, as well as unutilizing uneeded areas of irrigation, can help save a tremendous amount of both water and energy. With both power and water usage per plant being on the T, this not only perfects the way of cultivating plants, but also makes it as enviromentally friendly and cost-efficient as possible.

This is what I think maybe this can help you

Answer:

B

Explanation:

Enzymes work to speed up chemical reactions by changing what goes into the reactions into different molecules. To do so, these enzymes bind with the substrates, making the physical form very important. The lock and key method explains that enzymes and their corresponding substrates are shaped very specifically to be able to fit into one another to undergo this change. Hope this helps

Explanation:

Adenine pair with thymine, and cytosine pair with guanine. That's all I know

The pancreatic fluid is stored in small, sac-like structures known as pancreatic acini. These secretions then travel along the duodenum duct to the pancreatic duct, where they are released.

The pancreatic duct and duodenum are two essential components of the digestive system. The pancreatic duct carries secretions from the pancreas to the duodenum, which is the first part of the small intestine. The secretions of the pancreas, including digestive enzymes and bicarbonate, are produced in the pancreatic acini and then travel through the ducts to the duodenum.

The duodenum acts as a buffer, allowing the secretions to mix and interact with the other digestive enzymes and bile from the liver, before entering the small intestine. The pancreatic duct and duodenum work together to ensure that the body can properly process and absorb nutrients from the foods we consume.

The pancreatic fluid is essential for proper digestion and absorption of nutrients, as it helps to break down complex molecules in the food we eat. Without the pancreatic duct and duodenum, the body would not be able to process and absorb the necessary nutrients.

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Answer: Lucy

Explanation:

I’m a physical science major

The bubbles are an invisible form of water called water vapour. So the person to agree with is Grandma.

The boiling of a liquid is defined as the increase in the vapour pressure of a liquid to a value higher than or equal to the value of the atmospheric pressure.

The temperature at which the vapour pressure of a liquid exceeds or becomes equal to the value of atmospheric pressure is called the boiling point of a liquid.

The boiling point of water at a pressure of 2 atm is equal to hundred degrees Celsius. Thus, the boiling of a liquid is a function of temperature, vapour pressure and atmospheric pressure.

When the process of boiling begins, the energetic molecules start to get converted to gas. This results in them spreading out and leads to the formation of bubbles. Thus, when water is boiling, the water starts to get converted to vapour.

Therefore, the bubbles in the water during boiling are an invisible form of water called water vapour.

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Habitats with low biodiversity tend to contain wide ecological niches because they are characterized by limited resources and a lack of species diversity.

When resources are limited, the competition for those resources is high, meaning that the few species that do exist must compete for the same resources. This competition can result in the emergence of an ecological niche, where a single species can monopolize a resource due to its unique adaptations that allow it to successfully exploit the available resources.

Muddy shores, which are made up of sedimentary deposits, are often characterized by limited resources and a lack of species diversity. These shallow habitats tend to be low in oxygen, making it difficult for many species to survive. Additionally, the sedimentary deposits can be unstable, making it difficult for species to establish themselves in the habitat. As a result, muddy shores tend to have fewer species present, resulting in a wide ecological niche.

Wide ecological niches can also be caused by the presence of physical barriers or abiotic factors such as temperature and salinity. For example, muddy shores tend to have higher temperatures than rocky shores due to their shallow depths. This higher temperature can limit the types of species that can survive in the habitat, resulting in fewer species and a wide ecological niche. Additionally, the muddy sediment can have a high level of salinity, which can also limit the types of species that can survive.

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Numerous protists are included in the supergroup unikonta together with mammals and fungi. Amoebas make up a large portion of Unikont protists.

Organisms called eukaryotes have nuclei and cell organelles that are both membrane-bound. Eukaryotes make up every kingdom except from Kingdom Monera.

The largest eukaryotic subcategories, known as eukaryotic supergroups, have been identified. The eukaryotes can be split into four groups since there are currently four of them. The archaeplastida, SAR, excavata, and unikonts, also known as Amorphea, are described here.

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Explanation:

Thorn apple, also called gypsum weed and moonflower, is a poisonous plant belonging to the nightshade family. Ingesting thorn apple fruit may induce delirium and possibly death. The "sacred Datura" is a toxic plant native to northern Mexico and the southwestern United States.

Answer:

Antibiotic resistance is when pathogens such as bacteria or fungi develop a resistance to antibiotics. This happens when some pathogens die, and others survive. The small number of pathogens that had a resistance to the antibiotic will reproduce more offspring that are also resistant to, and those offspring will reproduce even more offspring and so on. Eventually most pathogens will be resistant to the antibiotic, so antibiotics won't work.

Answer:

I think that answer is A

Explanation:

how long ago did the organism lived