Answer:
This is known as <u>a density-independent limiting factor</u>
Explanation:
The ER comes in two different morphological forms: smooth ER and rough ER
I think it is A because birds do help spread around the seeds hope i helped
Answer:
conducting research to observe things in their natural habitat.
Explanation:
for example if someone is studying a certain culture, they would study the peoples culture, folklore, ways of living, and would interview them.