Will give correct answer brainliest

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Blank liquids and gases exert a buoyant force on objects placed in them