The mixture of gases surrounding a planet

(a)  

a molecule made of carbon and oxygen atoms

(a)  

When something becomes different over time

(a)  

a proposed answer to a question about the world.

(a)  

general weather patterns over along period of time.

(a)  

changes in climate over a long period of time that can be caused by natural events or humans activites

(a)  

the process of burning fuels, which produces carbon dioxide.

(a)  

information collected in an investigotions.

(a)  

the process of clearing trees from land.

(a)  

the ability to make things move or change.

(a)  

The sudden pushing out of something, such as lava from a volcano

(a)  

information about the natural world that is used to support or go against (refute) a claim

(a)  

variations in a set of data.

(a)