Answer: The Mitral and Tricuspid valves control blood flow in the heart
Explanation:
The third one is true
your metabolism slows when u get older ,
and ur metabolism can speed up or slow down
"When water molecules escape from your frozen food, it is also possible for oxygen molecules to seep in. The oxygen molecules can dull the color and modify the flavor of your frozen product. Food that has freezer burn is safe to eat, but you may find the texture and taste not to your liking."
Source - https://www.loc.gov/rr/scitech/mysteries/freezerburn.html
Answer:A
Explanation: If you’re constantly worrying about contaminations you’ll clean
