Answer:
Your answer is 4. Hope this helps you. Have a great day! :)
Explanation:
Because when exercising your heart pumps more blood to your body and
it has more space to fill so it beats faster
The correct answers (c.) punctuated equilibrium.Punctuated equilibrium is a mode of evolution that the certain foraminifera (shelled protozoa) represents. It is , in fact, the hypothesis of the evolutionary development of rapid episodes that is marked between long periods of little or even with no change at all.
<span>The nuclear envelope is a membrane that encloses a nucleus and separates it from the cytoplasm in eukaryotic cells. It is also known as the nuclear membrane. It is made up of two membranes - the inner membrane and the outer membrane. By separating the nucleus from the cytoplasm, DNA in the nucleus remains safe from the chemical reactions that occur in the cytoplasm.</span>
A microscope? Because it like looks at small micro objects.