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skelet666 [1.2K]
3 years ago
6

Which of the following examples shows the influence coal has had on human activity?

Biology
1 answer:
Ghella [55]3 years ago
8 0

Answer:

The correct option is A. Coal use in steam engines led to easier access to goods.

Explanation:

Coal is used in steam engines as a fuel. Coal is one of the cheapest source of energy and hence it has been serving mankind with various benefits since a long period of time.

The coal-based steam engines played a very important role in the developments made during the Industrial Revolution. Many industries started using coal as a power material and made progress.

The steam engines made it possible to transfer goods from one place to another very easily. As coal was a cheap source, hence trading of goods by steam engines was not very costly.

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Answer:

Minimal media + glucose + streptomycin

Explanation:

Those capable of synthesizing galactose can grow in minimal media, the availability of streptomycin will destroy those who are susceptible to the antibiotic, whereas glucose, a carbon source from which galactose may be produced and will encourage growth.

Therefore:

The medium should not include galactose when selecting for gal⁺.

Streptomycin should be present in the medium to select against str^s.

The medium to choose is: Minimal media + glucose + streptomycin.

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Explanation:

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Answer:

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garri49 [273]
Eukaryotic chromosomes contain both DNA and protein tightly packed together to form Chromatin.
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Slav-nsk [51]

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