Which kind of rock is produced by deposition and cementation?
A: sandstone, a sedimentary rock

Which of these animals has a young form that looks the most like the adult form?
A: human

When bedrock in Massachusetts is examined, it often appears scraped and polished. Which of the following most likely caused the bedrock to appear scraped and polished?
A: glacial movement

Extinction of a species is most likely to occur as a result of
A:
environmental changes