Mr. Marnoni weighs 175 lb on planet Earth. On what planet and how much would Mr. Marnoni weigh
the MOST? (Hint!!! Use the ratio between
gravitational pulls of Earth and the planet).

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 is the following best defines climate?

Diagram of the evolution of land plants?