Which term best describes a crab or lobster?
a) gastropoda.
b) polychaete.
c) arachnid.
d) crustacean.
e) reptile.

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

List charasteristics of athenosphere

What is the process of pulling apart an n2 molecule nevermind i got it