Photosynthesis Takes part in that.
In lakes and ponds there is a whole ecosystem, with its animals and plants. Between them they are in charge of maintaining the entire habitat in favorable conditions for living. The fish tank does not have that cleaning system.
Answer:
Option 2
Explanation:
It is because 10+12+18=40 which would be total amount of rabbits
and there are 18 white rabbits putting it at the top for the frequency