How can electromagnetic waves be used to fight a forest fire? 1.) Gamma ray images can show hot spots as radioactive areas. 2.) Ultraviolet images can show hot spots as fluorescent areas. 3.) X-ray images can show hot spots as white areas. 4.) Infrared images can show hot spots as red areas.

4: Infrared images can show hot spots as red areas

Explanation:

I took the test

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.