Hydrophones scientists listen to and record sounds from the ocean. which statement best describes how ocean water affects sound waves?
cold water increases the speed of sound.
warm water decreases the speed of sound.
low water pressure increases the speed of sound.
high water pressure increases the speed of sound.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.