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svetlana [45]
4 years ago
6

Chalcopyrite is the ore for which mineral? A. iron B. gold C. copper D. aluminum

Biology
1 answer:
Arada [10]4 years ago
3 0
Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS₂. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black
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A scientist used radiation to change the mutation rates of a population of bugs. He then measured how many generations it took f
Papessa [141]

For this experiment, artificial selection is made by the scientists where traits of benefit are made to be present in the gene by high mutation rate so that the adaptability increases.

Explanation:

Natural selection is a process by which a organism with beneficial traits survive and reproduce in large numbers. They adapt to the environment very quickly and pass on these traits to its progeny which are at the better survival zone.

The mutations for the beneficial traits in certain genes caused the bugs to adapt to their environment well. When mated, they pass on the traits in every generation. It is also said that those organisms who did not get mutated eventually died.

The faster the mutation rate, the faster the mutated bugs with beneficial traits will appear in each generation.

From the graph it can be said that those bugs who could not bear the mutation they died and hence did not appear in the next generation only those bugs who could cope up the environment survived.

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3 years ago
What is involved in the contraction of skeletal muscle?
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Motor neurons are involved in the skeletal muscle contractions in vertebrates, as the process is a synaptic one. These occur due to a conscious effort by the brain, from which these signals originate. In some reflexes, the signal originates from the spinal cord. 
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3 years ago
All of the following determines an ecosystem except _ (blank) _. Select one: a. Amount of rainfall b. Mountain ranges c. Ocean c
Marat540 [252]
Amount of rainfall
I’m not sure if this is right but I think it is because all of the rest are major parts of ecosystems, and although rainfall is too, it’s more of a natural source that happens anywhere whereas the rest of the options may determine the ecosystem
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What happens during the Krebs cycle?
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uysha [10]
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