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olasank [31]
3 years ago
5

Which best describes the main sources of energy in the United States?

Biology
2 answers:
Sever21 [200]3 years ago
3 0

Answer:

D

Explanation:

Most of the energy in the United States comes from the burning of fossil fuels (coal, oil, natural gas). Hope this helps!

san4es73 [151]3 years ago
3 0

Answer:

D. Coal,oil,natural gas

Explanation:

The main sources of energy in USA are non renewable sources of energy like coal, oil and natural gas. Oil is the main source of energy in USA while coal stands second as a source of energy. Apart from these two, natural gas is also widely used  in USA as an energy source. Non renewable sources of energy are also known as conventional sources of energy. Alternate sources of energy which are also known as renewable sources of energy like wind, solar hydroelectric, geothermal energy etc. are not used commonly as main sources of energy in USA.

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3 years ago
If you were to take all of the DNA from all of the chromosomes in your body and stitch them all together into one continuous lin
sergiy2304 [10]

Answer:

152.88 solar unit.

Explanation:

The haploid genome content of the human cell is  3.3 x 10⁹ bp but the human cell is diploid.

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1 cell contains DNA = 6.6×10⁹ bp/cell.

10¹³ cell DNA content =  10¹³ x  6.6×10⁹ = 6.6 x 10²² or 6.6 x 10¹⁹ kilo base pairs.

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6.6 x 10¹⁹ kilo base pairs of DNA = 340 × 10⁻⁹ × 6.6 x 10¹⁹ = 2244 x 10¹⁰m.

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Then 13912.8 ×10⁶ miles = 13912.8 ×10⁶ miles/ 9.1 x 10⁷miles = 152.88 solar unit.

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Thus, the answer is 152.88 solar unit.

6 0
3 years ago
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