Co2 in the atmosphere is absorbed by and converted into biomass. the ozone layer photosynthetic organisms large land masses other atmosphere

What are two reasons for why a species might disappear from the fossil record?

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

What is used to keep track of the gamates and possible offsprings combination