Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks. a) igneous b) sedimentary c) metamorphic d) crystallized

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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