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Chapter 2, Section 2.3

Name___________________________________
Date__________________________________\
Horizontales
Water in the ______ is called water vapor.
Scientists that study water found underground, in the atmosphere, and on the surface of Earth in the form of lakes, streams, rivers, glaciers, ice caps and oceans.
(2 words) The process of capture and conversion of nitrogen into a form that is useable by plants.
These form when the cooling water vapor condenses into droplets around dust partials in the atmosphere.
Green plants and algae convert carbon dioxide and water into carbohydrates and release oxygen back into the air.
Verticales
(2 words) The natural processes by which water is continuously cycled through the biosphere.
Anything that takes up space and has mass—provides the nutrients needed for organisms.
A cycle that involves living organisms, geological processes, and chemical processes.
A process where some soil bacteria convert nitrogen compounds back into nitrogen gas, which returns it to the atmosphere.
A chemical substance that an organism must obtain from its environment to sustain life and to undergo life processes.