Phosphorous is:

A:found free in the atmosphere

B: returned to the soil by rhizobium

C: added to the soil though weathering

D: usually very abundant in an ecosystem

Which domain (s) include (s) only prokaryotes

Specifically where in a cell are pyrenoids located

Mutation does not always affect the evolution of a species because not all mutations are inherited not all mutations are beneficial not all mutations cause visible change not all mutations affect an entire species

A scientist discovered a new cell; however, the scientist is not certain as to the type. the cell contains a central vacuole, a cell wall, and chloroplasts. the cell is most probably:

dinobryon is a species of protozoa that reproduces asexually. how is it better for the survival of the species for the protozoa to reproduce asexually instead of sexually?

What kinds of organisms require telomerase?

Suppose that a species of fish has split into two populations in a lake: one on the eastern side and one on the western side. How could you determine whether the two populations constitute different species? A.

Organisms interact with their environments, exchanging matter and energy. for example, plant chloroplasts convert the energy of sunlight to

What is the function on an ovary in a flower?

You are a chicken breeder interested in developing new hybrids that have many of the genes from the original ancestor birds. what should you breed your birds with