The hydra is a very small, simple animal that lives in the water.
Hydras reproduce asexually by
budding, a process in which a bud
breaks off an adult hydra and
floats away.
Which of the following best
describes a hydra bud?

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

human-caused climate hope this

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.