Organisms are classified based on
A
the number of them that exists in a species
B
their Greek names
similarities and evolutionary relationships
D
the year their fossils are discovered

B

their Greek names

similarities and evolutionary relationships

Explanation:

the science of classifying organisms based on shared structures, functions, and relationships to other organisms.

the answer is b.) hydrogen bonds between bases.

i believe it is c: genes for body color and wing size are inherited separately from each parent.