Vocal sounds are:

a. mechanical or b. electromagnetic

How do ecosystem respond to nature disasters such as fires and floods

Modern whales developed their traits through natural selection what occurs during the process of natural selection

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