What is an important Abiotic factor?

_______ is a model that describes how water moves from the surface of Earth to the atmosphere and back to the surface again

This transfer of Nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere is called _____________

The ___________ describes how carbon molecules move between the living and nonliving world

This production of energy-rich nutrient molecules from chemicals is called _________

A __________ is a model that shows all the possible feeding relationships among the organisms in a community

An ____________ shows the amount of energy available at each feeding level in an ecosystem

The Carbon Cycle begins when ______ and _____ remove carbon from the environment during photosynthesis

What is Condensation?

What is at the bottom of the energy pyramid?