If mn = 4, nc = 10, and rs = 2, find sc. a) 5 b) 10 c) 15 d) 20

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?

What are two reasons for why a species might disappear from the fossil record?

What characteristic make legumes a good food source for food insecure populations