A photoautotroph get its energy and carbon from the sunlight and from organic material. Photoautotrophs are organisms that carry out photosynthesis. They use energy from sunlight to carry out cellular processes. Hope this answers the question.
My Answer: The death rate begins to fall, but birth rates remain high for a time.
Why?: Many of our countries are in Stage 2, that is why the government is concerned about our overpopulation.
Hope I helped! :D
The answer is lower because having to return to a pre disturbance size will likely affect its genetic variation to be lower compared to the original population where in its genetic variation will be greater compared to those in pre disturbance size.