Why would you expect an earthworm to lack an exoskeleton? ?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

If your blood becomes too concentrated with iona, what will happen to the red blood cells

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.