Which description fits with the term biomass? Choose the correct answer. O the producer-to-consumer ratio in an ecosystem
O the mass of all living things on Earth
O the unused material excreted as waste in an ecosystem
O the mass of the living and dead organisms in a given area

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Each hereditary trait corresponds to

In which ways are mercury and venus similar?