The formation of igneous rock is most directly related to which of the following geologic events?
a, Glacier melting
b. Mountain building
C, Weathering and erosion
d. Volcanic eruptions

Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false

What are the four basic classes of organic molecules how do they differ structurally and functionally

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.