Mitosis is a process of nuclear division
It is D, Because cells are a very complex organism, they have a lot to do. It is like saying you have a play house.. but it is completely empty, that is if you chose A. They were not discovered in 1700s, they were discovered in 1665. and organisms are found in ponds, so they have cells too. So your answer is D.
<span>This rock is a type of volcanic rock called
Scoria. They are generally dark-colored and have bubble-like cavities that are
known as vesicles. They can be black, dark gray or deep reddish brown in color
that has similar characteristics to basalt rocks. They form when gases and
water vapor escape from the rock as it cools from a volcanic eruption when
exposed to the outer environment.</span>