Answer: ОВ. It can lead to loss of species or ecosystems.
Explanation: Too much fish farming could lead to extinction of some marine
wildlife.
The answer is Nitrogen fixation
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For the first animal: 250x1000=250000 mg
for the second animal: 330x1000=330000 mg
to find the difference: 330000-250000=80000 mg (which is your final answer)
If meiosis doesn't take place then the fertilization does not take place !
if one fertilised the egg by any means , then the ploidy of the zygote will increase and there generates a lot of disease !