A Chemical formula tells you the ratio of elements in substance, but it doesn’t tell you? what doesn’t chemical formula tell?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which of the following is required of a new drug?me

Which phrase best describes the main goal of a human community