Which describes how light travels? A. about 300,000 km/second
B. fast
C. in a straight line
D. all of the above

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter