How do humans negatively impact the tundra biome

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?

How many cells are our body made of ? ♡

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute