Answer:
When the population reaches its carrying capacity.
Explanation:
As a population grows, there is more competition for resources which can limit a population. There are also natural disasters that can play a role too such as disease. Another factor that is part of carrying capacity is the size of the habitat. If there is no room, then the population cannot increase.
Answer:
organ
Explanation:
An organ is a group of tissues that work together to carry out a common function?.
Most nitrogen fixation is performed by bacteria, but they are biotic, not abiotic. Lightning does have the ability to fix atmospheric nitrogen.
