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damaskus [11]
3 years ago
5

The part of a. Soundwave that we hear as loudness is

Biology
1 answer:
DedPeter [7]3 years ago
5 0

Answer:

Explanation:

For most humans, zero dB marks the threshold for perception of sound, although loudness ultimately depends on both amplitude and frequency. The human ear is most sensitive to sounds between 1000 and 5000 Hz. The amplitude of a soft whisper is approximately 30 dB.

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What process is used to take atmospheric nitrogen and turn it into nitrates?​
andre [41]

Answer:

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Explanation:

Certain soil bacteria, e.g., <em>Azobacter spp</em> can combine free nitrogen of the atmosphere with oxygen to form nitrates. This is called <u>nitrogen fixation</u>. Other nitrogen-fixing bacteria such as Rhizobium form symbiotic unions with the roots of leguminous plants called root nodules. They fix nitrogen to form nitrates which are used up by the host plant. Nitrifying soil bacteria, e.g., <em>Nitrobacter </em>convert nitrites to nitrates in a process called <u>nitrification</u>.

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3 years ago
Two next-door neighbours use very different strategies when it comes to landscaping their front yards. One neighbour plants a fr
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3 years ago
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Answer:

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8 0
3 years ago
What are sessile algae?
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Which of the following is not a cause of a tsunami?
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