I say about 40 percent cause say something like this ..
20% of small species of fish
20% of big species of fish
to be equal
20% are bigger
20% are smaller
hoped this helped ! <u />
<em>~</em><u><em>Frozen 2</em></u>
<span>2) higher genetic variation among the offspring</span>
Answer:
Although hydroelectricity is the least expensive energy source to generate electricity but still it is not used by most of the companies as it changes the normal flow of water,affects aquatic organisms,hamper fish habitats etc.
Explanation:
As hydroelectricity is fully depend upon water flow so it may create several consequences like drought,or another natural calamity may affect potentially.This may also affect the aquatic organisms that are fully depend on aquatic body.
Moreover, there are limited reservoirs for hydroelectric power plant .Only few are functional.
The convergent evolution may cause the arising of the similar traits in distantly related species. These traits may arise due to the demands during the course of evolution, the reason for having a different origin may be that it was not required initially, but required later. The bones of the birds and the bat are homologous in structure, but the origin of the wings are different.
So, these characters represent a type of convergent evolution.