Answer:
Frog, grasshopper, and rabbit
Explanation:
depending by the region, these may vary, but these are at or near the same trophic level
answer is polygenic inheritance
This can affect the organisms living there because now, their environment is probably different than what they have been living in for a long time, so now they have to adapt to this new environment, and if they don't, the organisms will probably end up dying.
I believe that all members of one species form a population.
The brain is incorrect. Its the nucleus (the brain is an organ not a organelle)
hope that helps :)