Our planet has so many different ecosystems in which species live in. Whether it is the rainforest or a desert region, it seems that almost any place on earth can be one in which species have learned to adapt to living there. In short, yes there is great diversity on this planet.
Out of the choices given, the mechanisms that drives evolution is natural selection. The correct answer is B, natural selection.
See that river on the bottom? That water has been flowing in the canyon for a long time and has slowly been chipping away at the rocks to give what you see today.
B. erosion from the water
<span>(According to Reference)
Whereas an onion epidermal cell has a cell wall, a human cheek cell does not. Instead, a semi-permeable membrane surrounds the cytoplasm of the cheek cell. While there are chloroplasts present in onion cells, they are absent in cheek cells. </span>
