The Carbon Cycle

a forest containing trees that lose their leaves each year

the layer of rock that forms Earth's surface

the process in which plants and some other organisms use the energy in sunlight to make food

the slow warming of Earth's atmosphere due to climatic change

the production and discharge of something, especially gas or radiation pollution

a process that converts organic molecules, such as glucose, into CO2, water, and ATP, the energy currency of the cell

an element that is found in almost all compounds that make up living things

Humans rid themselves of ______ _______ waste by exhaling, or breathing out.

Fossil Fuels exist as solids, liquids, and gases - some examples of which are coal, petroleum, and natural gas.

a prolonged shortage of rainfall

an organism that makes its own food; an organism that does not consume other plants or animals

biological science applied to industrial or other technological purposes

large-scale movement of water within the oceans in a certain direction

solid material, moved by wind and water, that settles on the surface of land or the bottom of a body of water

a major ecological community such as grassland, tropical rain forest, or desert

Earth's crust, both beneath the oceans and continents, as well as the mantle and inner and outer core

Fossil fuels come from the decay of organisms buried in sediments pressed tightly together for millions of years

the clearing, by burning or logging, of trees in a forested area

layers of gas that surround a planet (related word: atmospheric)

a kind of sedimentary rock: Some kinds of ______________ are made from ancient sea shells.

The low demand for fossil fuels comes with environmental costs.

dispersion of substances in a gas or liquid

the process in plants by which water is taken up by the roots and released as water vapor through stomata in the leaves

any substance with a pH less than 7; it can turn blue litmus paper red (related word: acidic)

__________ ________ currently supply the world with more than 85 percent of its energy.

the spread of desert-like conditions often due to the actions of humans

pollution discharged into the atmosphere from a variety of sources

the physical or chemical breakdown of rocks and minerals into smaller pieces or aqueous solutions on Earth's surface

that part of Earth in which life can exist

Carbon Dioxide

all of the water on, under, and above the Earth