The answer is whales. In the Antartic and Arctic regions, krills and whales are very abundant in numbers. Whales are number one consumer of krills in these regions. They can feed on a large swarm of krills when they feed. They also have less competition on these icy waters. They gain energy every time from eating them.
Answer:
A: glaciers wearing down layers of rock
Explanation:
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As water vapor rises in the atmosphere, it cools and changes into liquid cloud droplets in a process called condensation