The similarities in the fore limb bones of humans,cats,dolphins and bats leads to the conclusion that they all evolved from a common ancestor.
The Earth System includes the core, mantle, and crust
This can also be labeled as the earth's Interiors
It is C beacuse you would produce large quantities of the neurotransmitter to see if it could be used as a potential medication.
The lining of the uterus is shed because an ovum has not been fertilized
