The answer is A.
the researchers would not be able to compare the samples and cut the DNA when samples from the waterway are not collected.
I would say the correct answer is D. fruits and vegetables that do not spoil easily.
To me, this seems like the only advantage to genetic engineering among these examples. A is incorrect because you would want your crops to grow faster, not more slowly; B is incorrect because pathogens are bad and you don't want them; C is incorrect because diversity is important. Thus, D is the only correct answer here.
The poison dart frog suddenly increase if the predator that feeds off the dart frogs goes extinct or migrates to a different area then the dart fronts will have a much larger population.
This means that the resources the dart frogs rely on will start to diminish and their prey will have smaller numbers
The rising of deep cold currents to the ocean surface is called<span>
<span>upwelling
</span></span>Hope this helped :)
