A
Explanation:
everything else finds or eats food that was made otherwise.
The water will move out of the fish by osmosis due to existence of concentration gradient .
There are 1 to 2 called alleles
I think some factors that influence rabbit reproduction is enough food, healthy rabbits, lots and lots of space for them to populate, and very little predators. This should help I'm not exactly sure what you are looking for though sorry. :^)