Answer:
It is important for an ecologist to study the habitat, if it is in danger, the food it eats and what eats it.
Answer:
Always evolving in time as we develop new things for mankind
Explanation:
Selectively permeable means that it allows only the nutrients it needs but keeps out the bad things out. For example, some windows have the netting to keep out the bugs from going into your house. That is selectively permeable.
