Animals store most of their excess energy reserves as fat within the body. Whenever carbohydrates are not available, this stored fat provides the required energy. Fat is a very important part of the diet as it helps to maintain the body temperature. Fats also help to absorb certain vitamins like A, D, E and K.These vitamins are highly essential for our body and is present in our daily diet that we eat. These vitamins are also called fat soluble vitamins. It should also be kept in mind that there are good fats as well as bad fats. The increase in the amount of bad fats can be fatal and can be a reason for heart attack.
Answer:
D all of the above
Explanation:
a - provide protective covering on the land to prevent soil erosion
b - provide shade, protect from wind and help moderate the temperature
c - animals can't make their own food, so they depend on plants for supply of food
Therefore, the answer is D all of the above.
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Answer:
Primary active transport
Explanation:
Primary active transport is the transport in which molecules are moved against their gradient, with direct use of ATP as an energy source. Na/K pump is an example of primary active transport: Na ions are transported out of cell, K ions are moved into the cell. This pumps maintain concentrations of those ions and also creates voltage across the cell membrane, which can be used for the secondary active transport of other molecules (e.g. glucose).
Answer:
Students who take a PE class and who will be eating sugary snacks before PE.
Explanation:
The control variable (or control group) is an experimental element which is constant or unchanged throughout the course of the experiment.
The option "students who take PE class and who will be eating sugary snacks before PE" will remain unchanged and constant because the whole point of the experiment is to see the effects on students performance in PE after eating sugary snacks.
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