Describe two serious threats to our supply of groundwater.

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

What best describes emerging scientific ideas

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?