What do biologists use to establish whether or not two organisms are of the same species?

Answer & Explanation:

The first important part to consider is the actual definition of species. There are many, depending on the field. Essentially two organisms belong to the same species if they can mate, cross and the breeding is viable. This means that, if they do mate and actually give birth, the baby must be able to also mate and breed. Hybrids, for example, cannot breed and that's because the parents did not belong to the same species, causing that the breeding is infertile. Recently molecular studies have been able to recognize organisms from the same species with their genetic similarities or differences.

answer by yourhope:

hi! : )

in which structure in the nucleus are ribosomes made?

b) nucleolus!

: )

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.