An organizational unit broadly corresponding to a city ward or a Spanish “barrio”
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Answer: c. Producers.
Explanation:
A hydrothermal source is a crack in the earth through which water flows, was heated under the surface by magma. Heat causes water to flow precipitously to the surface. If the crack is on the earth, it is called Geyser, and if it is underwater, it is called fumarole.
Producers are those organisms that synthesize organic matter from inorganic matter, in marine ecosystems marine plants are the primary producers.
For producers to acquire energy, sunlight is necessary, so it was considered impossible for producers to exist in deep waters in the oceans. However, around the fumaroles ecosystems have been found that subsist only with minerals that come from the expelled water, such as sulfur.
I hope this information can help you.
Answer: Option (B). Psychoacoustician
Explanation: it is the branch of science studying the psychological responses associated with sound (including noise, speech, and music). The main objective of psychoacoustics is to understand how people perceive and experience sound. This can be at a low level; for example, we might want to understand how accurately you can locate a sound source, or we might want to measure the smallest change in sound level you can detect.
However, If you are building a pair of high-tech headphones and want to have the best sound possible for listening to music, Psychoacoustician is the kind of scientist that should be hired to help develop the product. Ultimately, all sound that we perceive is psychoacoustic. As soon as sound passes through the ears, it stops being a physical phenomena and becomes a matter of perception.
