Answer: <u>Sinks towards the outer core
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Explanation: The material which is less dense, means it is lighter in weight. Such substances tend to move more towards the crust of the Earth, whereas the heavier substances like iron, is more towards the core or centre of the Earth. This is because heavier substances tend to sink deeper. That’s why the light elements are found in the crust section of the Earth.
Direct observation is an observation you make first hand. It is something you see with your own eyes and observe yourself.
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Answer:
B
Explanation:
They would grow bigger and faster, meaning they would quickly outcompete the native salmon for food, space, etc.
Answer:
Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.
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Answer:
pollution
Explanation:
Pollution is the introduction of contaminants into the natural environment that cause adverse change.
