What factor has the greatest effect on species diversity

Where have the earliest indications of cells been found

Variation within organisms within a species increases the chance that a species will survive changing conditions. What kind of reproduction produces the most variation within a species?

Which type of cell would best represent a bacterium? Prokaryotic or Eukaryotic?

Description of population density

When a trait has more than two alleles how is that trait inherited?

Suppose a bolt of lightning starts a fire in a forest. The fire sweeps through the forest and burns away accumulations of brush and deadwood. What is the most likely effect of the fire on the forest community?

What impact does 2-d diversity have on a company?

How can acid rain affect biodiversity in a pond?

Which of the following would be categorized as a cultural ecosystem service of forests?

Natural selection can lead to formation of a new species which is called?