Well, cray fish are omnivorous which means they eat animals too. Secondary consumers eat animals.
Cray fish are secondary consumers.
<span>It is the variable in an experiment is not directly altered</span>
A grasshopper may use the energy to move around, store it or use it for nutrients. There may be many answers to this.
Explanation:
What happens during daytime is, oxygen that gets trapped between filaments of algae, moves them to the surface and during night as O2 is not produced, they slowly sink to lower depths, and you don't see them
