A cell membrane is like a city border because it allows what comes in and out of the city.
Answer:
Explanation:
A trophic level is a set of organisms who all have similar nutritional needs. In a food web, secondary consumers, such as fox and birds of prey, are on the same trophic level. How do different populations from the same trophic level interact? Different populations on the same trophic level can compete for food.
I think the correct answer from the choices listed above is the last option. It would be 50 <span> full-length strands of hair are collected from the scalp to use as a sample. The more sample the better because you can easily repeat an experiment if there are errors found. Hope this answers the question.</span>
Formation of continental crust
