In both plant and animals cells, the cell membrane 1. produces enzymes 2. controls reproduction 3. is composed of sugars 4. regulates diffusion

What is the first step in a life cycle of a plant reproduce sexually

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?

*will mark brainliest to the first and correct answer less species diversity results in less a. oxygen b. food c. drinkable water d. all of the above