The answer is A, Sound waves must have materials to bump together to transfer the waves.
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
Explanation:
It is true that dead zones in waterways can occur as the result of fertilizer runoff.
The structure that is most responsible for maintain cell homeostasis is the plasma membrane
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