True. isotopes of uranium i.e U 235 is used as nuclear fuel in power plants
Answer:
a
Explanation:
A spider may produce hundreds of eggs, only a few of which may survive. This is an example of a. overproduction.
All organisms do have a closed circulatory system
so A <span />
One: The cell is able to move material in and out of the cell
Two: It helps the cell maintain necessary conditions for life
