Because the animal food chain ultimately relies on the sugars and organic compounds produced by plants, the ratio of 12CO2 to 14CO2 incorporated into animal tissues (e. g., bone) and organs should also be the same as that present in the atmosphere. A. TrueB. False

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

Tropical rain forests support more species per unit area than any other terrestrial ecosystem. what is one way rain forests are important to the health of the biosphere?

How and why organisms are hierarchically classifies