The number of organsims at each levels, so there are more producer than herbivores, more herbivores than carnivores and so on...
4 i guess........................
Due to the overproduction of offspring with only finite resources, species begin to engage in competition for survival. In order to increase their chance of survival, certain species will begin to develop genetic variations that allow them survival advantages.
Answer:
it's true
Explanation:
if it's dim light the iris will be large
