Answer:
You can think of Free radicals as some exhaust from a combustion engine. Get this picture: If an engine is running, it is throwing off some exhaust. Also, if you want to compare this to other things, you can compare it to the human body, as you digest food, breathe, and as you exercise you're producing free radicals. Just by simply living, you are producing them every single second of your life.
Explanation:
Yellow Marrow is common in the skeleton in old age but not in a childhood skeleton.
Answer: False.
Explanation:
Even though our atmosphere is made up of gases and encases and protects our planet, the same cannot be said about the moon. The atmosphere on the moon is too weak and too small to do much to protect it.
A person with clinical depression will experience at least four signs of the disorder for at least two weeks.
