Which list of elements consists of metalloids, only? A) B, Al, Ga
B) C, N, P
C) O, S, Se
D) Si, Ge, As

What metric units would you use to measure the thickness of a key

Displacement is the slope of a velocity vs. time graph a. true b. false

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles