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Glossary of Terms

Canopy
The upper level of a forest (both terrestrial and marine) where fronds, branches and/or limbs intertwine.
Cover
The percentage of ground covered by vegetation, rocks, moss, leaf litter or bare ground.
Calamity
A sudden event which causes widespread damage or distress, a disaster.
Calcium carbonate
A white insoluble material found in chalk, limestone and marble; as well as in the shells of various invertebrates and stony corals.
Caldera
A volcanic crater formed with an eruption causes the mouth of the volcano to collapse.
Cape
A headland or promontory of land that juts out into a body of water, such as a lake or ocean.
Cape Disappointment
A headland that marks the southwestern most tip of the state of Washington. The cape is located on the northern side of the Columbia River, northwest of Fort Stevens and Astoria, Oregon.
Cape Horn
A rocky headland that marks the southernmost tip of South America.
Cetaceans
An order of marine mammals which includes whales, dolphins and porpoises.
Civilian Conservation Corps
Also known as the CCC, a federal work relief program designed to provide income and work to men during the height of the Great Depression. Many CCC projects benefited parks and other public lands through the creation of trails, building, aqueducts and other resources.

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