Which group of modern mammals is the most closely related to elephants

Which osmotic and ionic strategies must marine teleost fishes employ?

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?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer