If a rock disintegrates by chemical weathering into small grains of similar composition, would this e considered reproduction?

Describe two recent or ongoing space missions.

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

Why are common names a problem for scientist?