Not sure what the choices are but a biotic factor is anything living.
Size, body structure, how it lives with its fellow family members, food source, habitat, and its predators are limited
Cells could live and possibly reform a new sponge
To predict a thunderstorm if the sky looks dark.
The female sex unit or the egg is produced in the ovary situated below the style.
The male sex unit or pollen is made by the anther inside the pollen sacs.
I hope this is what you needed. If not please ask.
