Natural environment

Natural environment

Related to any physical feature of the earth's natural environment.

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Natural environment > Coral reefs

macromolecule

Natural environment; Coral reefs

A large polymer, such as DNA, RNA, protein, lipid or polysaccharide, made up of thousands of atoms.

alpha particle

Natural environment; Coral reefs

A particle emitted from the nucleus of an atom, containing two protons and two neutrons, identical to the nucleus (without the electrons) of a helium atom.

dive computer

Natural environment; Coral reefs

A small electronic sensor and calculator, carried by the scuba diver, that calculates and displays the basic information needed during a dive, i.e., depth, time, decompression ...

ciguatoxin

Natural environment; Coral reefs

A toxin found in flesh of marine animals, especially some fishes, at some times, in some localities. It is probably of algal origin and causes paresthesia, gastrointestinal ...

sea cucumber

Natural environment; Coral reefs

An echinoderm in the class Holothuroidea. Sea cucumbers possess a flexible, elongated body and leathery skin, and tentacles surrounding the mouth. Although they don't ...

indicator species

Natural environment; Coral reefs

Any organism that by its presence or absence, its frequency, or its vigor, indicates a particular property of its surrounding environment; a species whose presence is a sign that ...