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Assoli18 [71]
3 years ago
7

As scientists have developed more productive crop varieties, farmers have switched from growing many traditional varieties to ne

w high-yield varieties. For example, in Peru, the Indians once grew 500 native varieties of potatoes. That number has been reduced to about twenty major potato varieties, worldwide. Why is it potentially dangerous to reduce the number of crop species in potatoes? A) It reduces the variety of crops available for human diets. B) It requires a larger investment than small farmers can make. C) It makes the overall crop more susceptible to pests or disease. D) It could reduce or cause the extinction of some predatory insects. Submit
Biology
2 answers:
ladessa [460]3 years ago
7 0

C) It makes the overall crop more susceptible to pests or disease. is the correct answer

Mars2501 [29]3 years ago
4 0

Answer:

Option C, It makes the overall crop more susceptible to pests or disease.

Explanation:

An organism keeps on evolving and varying from its previous generation based on the gene pool. The larger is the gene pool, the higher is the scope of variation.  

Now in this case farmers have stopped a growing traditional crop, which means there are only limited genes in the entire gene pool of hybrid potato which are free to vary based on the mating scenario.  

This limit on variation based on reproduction will ultimately reduce the natural ability of a crop to generate characteristics that could support it to survive in adverse condition. Thus, GMO may become more susceptible to the new evolved species of pest (which is free to evolve naturally)

Hence, option C is correct

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Answer:

it would be C, D, E

A is a mixture

B is a mixture

C is a pure substance because Oxygen gas by the chemical symbol O2, is strictly pure

D is pure substance because Gold is one of the basic elements found naturally in nature, and as such, in its pure form

E is a pure substance because Both ice and liquid water are the same substance. H2O Though ice water is a mixture of both solid and liquid it is a pure substance, based on the molecular structure of its components .

F is a mixture

Hope this helps! If so please Mark brainliest and rate/heart if it does help!

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Lelu [443]

Answer:

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Explanation:

Prior to Redi's experiment and other supporting experiments, it was formerly believed that life could emanate from non-living things, for example, the generation of maggots from rotting meat.

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“D” would be the best answer choice for me.... not sure if it’s correct though
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