The aurora borealis is caused by the collisions between gaseous particles in the Earth's atmosphere.
Carbohydrates are used for energy (glucose) and the fats are used for energy after they are broken into fatty acid
Proteins also use energy but the first job is to help with making hormones, muscle
Lipids perform structural components of cell membranes and function as energy storehouses
Answer: ozone concentration
Explanation: The Dobson Unit is the most common unit for measuring ozone concentration. Becuse ozone concentration is hard to measure they use The Dobson Unit.
