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Glossary of Terms

Arable land
Land which is suitable for growing crops and other agricultural activities.
Arachnid
A type of arthropod (invertebrate animal) which can include spiders and scorpions.
Archipelago
A cluster or chain of islands.
Arctic
1. Of or relating to the areas around the North Pole. 2. Very cold, as in weather conditions.
Arthropods
A large group of animals characterized by their lack of a back bone or spinal column. Arthropods may include insects, spiders and crustaceans.
Asexual
An organism which reproduces without the use of sexual organs or sexual mating.
Aspect
The direction a slope faces.
Atlantic Ocean
The part of the world ocean located between Europe, Africa, North America and South America.
Atoll
A ring-shaped island or series of island formed by coral around a submerged volcanic structure.
Auk
A variety of short-winged diving seabirds found mostly in the northern oceans.

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