I think the answer is that pressure builds and causes the heart to work harder.
Answer:

Explanation:
Science of cultivation, breeding, marketing and arrangement of flowers is called --
(b) floriculture
<span>growth of organisms in the broth i hope this helps
</span>
Eukaryotic Cells (animal and plant cells) have organelles. These organelles have many functions like storing genetic info, making energy for the cell, making proteins, etc. They help the cell run and work.
Answer:
4900 J
Explanation:
Potential energy is the product of the mass, gravitational constant and the height of the object.
U=mgh=10 kg×9.8 m s^(-2)×50 m=4900 J
So, the potential energy of the object is 4900 J.