The solar system is made up of eight planets, numerous comets, asteroids and moons, and the sun. the force that holds all of these objects together is

Where is energy trapped inside the organelle chlorophyll

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?

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain