The cross section below shows a stream flowing downhill. Points A through D are locations through the stream.

At which point would most deposition occur?
1)A
2)B
3)C
4)D

What was the land like over 500 million years ago? what was under the sea?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Which best describes somatic mutations? they are usually passed on to offspring. they can cause different kinds of cancer. they always result from point mutations. they only occur in reproductive cell