The two abiotic factors used to classify earth’s terrestrial biomes are
a) plant and animal species present.
b) trophic levels and average temperature.
c) average yearly precipitation and temperature.
d) length of growing season and amount of rainfall.

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car