Answer:
The capillaries
Explanation:
This is where the exchange of gases , nutrients and waste occurs between the tissues and the blood due to the small pores and spaces are between the cells
Mutualism because both animals benefit. The Elephant gets relived from the parasites that are on it and the bird gets food.
<span>Studying the changes in densities of pocket gophers when large herbivores such as elk are excluded from mountain forests would be an example of studying ecology at the community level.
A community refers to a group of organisms of various species that live in the same location and interact with each other. So, if this scientist is observing gophers and elks, they are looking at the level of communities, not anything more or less.
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While carbohydrates supply immediate energy for the body, lipids — a class of macromolecule — provide long-term energy storage. Lipids, more commonly known as fats, appear in many foods.
