Convection occurs in the. A. Troposphere
B. Ionosphere
C. Ozone Layer
D. Mesosphere

Adisadvantage of adding a vegetarian hot-food option to a school lunch menu is that it would a. force all students to change their diets. b. eliminate a meat option from the menu. c. only some students on special diets. d. increase the amount of food that is wasted.

Some fossils provide evidence to suggest that earth's climate has changed over time. which information can scientists obtain from these fossils? check all that apply

The blue segment below is a diameter of oo. what is the length of the radius of the circle?