Explanation:
Oxygen and nutrients from food must be absorbed into the bloodstream to be delivered to cells for respiration. Waste materials such as carbon dioxide must be removed from cells into the bloodstream. Tissues contain capillary networks to allow these exchanges to occur at a cellular level.
It's legit how plants live. Sun feeds plants, plants feed animals/us, animals feed animals/us, everything living works better when it eats
Answer:
2) It gets buried under layers of soil and rock for long periods of time. I know I was 6 days late, I apologize.
Explanation:
I took the K12 Test and got it right. Hope this helps!
Answer:
this is my lazy guess but: human activity, differences in emitted energy from earth, and natural fluctuations. BUT DONT TRUST ME LOOK IT UP IM NOT SMART
