Lakes, rivers, or springs can form when: A) limestone dissolves
B) groundwater reaches the surface
C) sand, silt, and clay are deposited
D) rain water seeps into the ground

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What are the first three quantum numbers for the electrons located in subshell 2s?

What natural processes produce large quantities of co2