What percentage of marine mammals are endangered or threatened?

Match the types of competition to their descriptions.

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of