I believe it is the nitrogen base. Adenine pairs with Thymine, and Cytosine pairs with Guanine.
:)
Answer:
I'm not sure about 9 and 10
11) True
12) False
8. Weather refers to short term changes in the atmosphere. Climate refers to what the weather is like for a long period of time.
7. Hailstorms, ice storms, thunderstorms, windstorms, tu rica es and tornadoes.
6 high air pressure experts a force on the surrounding low air pressure results in hire sea levers
