Answer:
pluto
Explanation:
the others are formed from other things
Radiation
The fire radiates heat and the human body absorbs said heat.
According to the second law of thermodynamics, energy is never 100% efficient because some of the energy disperses as heat.
Answer:
hope it helps
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answer:
it is 180 million years old