Answer:
It can go to waste because people think since it's renewable and they don't have to worry about running out of that certain rescourse that they can use it for purposes it was not intended for.
Explanation:
Answer: ensure blood flows toward your heart
Explanation:
These valves are what ensure blood flows toward your heart. Vein valves work hard, against gravity, to bring the blood that flowed down via arteries back up to your heart. When your vein valves are open and healthy, they are able to do their job properly, as the blood is easily able to flow up.
Answer:
New flu vaccines are released every year to keep up with rapidly adapting flu viruses. When you get vaccinated, your immune system produces antibodies to protect you from the viruses included in the vaccine. But antibody levels may decline over time — another reason to get a flu shot every year.
Explanation:
Esophagus works to carry the food into the stomach and then the stomach then digest the nutrients thus sending the liquids to the small intestine and the solids to the bigger one, the bigger one leads to the rectum where you poop it out, the smaller intestine will lead to your urethera where youll pee it out
Answer:
the sun and earths interior I'd say
