We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
Intake and eject
I hope it is correct

Absolute Dating
AKA. RADIOMETRIC DATING
We can learn about the past by studying the present.
The Principle of Uniformitarianism states that current geological processes are the same processes that were at work in the past. This principle was proposed by Charles Lyell in the 1800's
Absolute Dating
Involves finding the absolute age (actual age) of a rock or fossil.
Elements that emit particles and energy are radioactive.
As radioactive elements emit particles and energy, they form new isotopes or elements.
Phospholipids are not in the animal cell
Answer:
When water freezes, the temperature decreases and therefore, the average kinetic energy will decrease as well