Answer;
A.The internal organs are cushioned by fat.
Explanation;
-Most of the nutrients in food fall into three major groups: proteins, fats, and carbohydrates. The body uses fat as a fuel source, and fat is the major storage form of energy in the body.By supplying energy, fats save proteins from being used for energy and allow them to perform their more important role of building and repairing tissues.
Fat also has many other important functions in the body, and a moderate amount is needed in the diet for good health.They also cushion internal organs, provide insulation against temperature and also facilitate absorption of fat soluble vitamins.
b. a transmission electron microscope, because it has high resolution
A scanning electron microscope would be the best choice for a scientist examining the living cells lining the respiratory tract. This is due to its capability of scanning the surface of the whole cells, which is essential to properly observe the tiny hairs on these cells that move dirt and mucus away from the lungs.
To explore living cells lining the respiratory tract, the best instrument would likely be a scanning electron microscope (SEM). While both SEM and transmission electron microscopes provide high-resolution images, a key difference is how they interact with the specimen. The SEM scans the surface of whole cells, making it ideal for observing the tiny hairs, or cilia, on the cells of the respiratory tract. These tiny hairs move in coordinated waves, pushing mucus and trapped particles out of our lungs. This process can be best observed on the whole cell surface, which is why SEM would be preferred.
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Answer: B. competition
Explanation:
A niche can be define as the functional role which an organism plays in an ecosystem to sustain it's life. For example, the type of food the organism eats, or type of habitat chosen.
Generally, when two species exhibit a same niche, competition for resources develop between the two species.
According to the competitive exclusion principle when two or more species compete for the same resource the one which is superior over the other receives the resources and the population of weaker species decline.
In the given situation competition will develop between the two species of mouse as they exhibit same niche and competitive exclusion principle on two mouse population will apply.
In order to increase the rate of photosynthesis in a plant, a plant should be developed with many broad leaves. The broad leaves will have increased surface area and more chlorophyll. The increased number of the leaves in the plant will also contribute to the overall increased rate of the photosynthesis.
A strong and thick stalk will support the plant but will have no effect on the rate of photosynthesis. Narrow leaves will decrease the photosynthesis rate. Bright flowers will aid in pollination via the honeybees but not increase the photosynthesis rate.
Hence, the correct answer is 'many broad leaves'.
Answer:
E
Explanation:
Fibrous proteins are, well, fibrous. They are fibers, think microtubules.