Page 13 - ingilizce

Animal : A living being capable of sensing its environment and moving about. Animals live by

eating the bodies of other organisms, whether plant or animal.

Annelid : Term for a member of the Phylum Annelida containing segmented worms.

Anterior : Toward the front.

Aquatic : Living in or upon water.

Arctic : Pertaining to the region around the North Pole.

Bacteria : Plural for bacterium, a one- celled organism which can be seen only with a
microscope. Bacteria may be shaped like spheres, rods or twisted springs. Some bacteria cause

decay; others may cause disease. Most bacteria are beneficial because they help recycle
nutrients.

Barrier : A geographic zone such as an ocean, desert, or glacier which would prevent the
migration of an earthworm. Barriers may be different for other kinds of animals.

Bedding : Moisture- retaining medium which provides a suitable environment for worms.
Worm bedding is usually cellulose- based, such as newspaper, corrugated cartons, leaf mold,
or compost.

Bio-degradable : Capable of being broken down into simpler parts by living organisms.

Biologist : A scientist who studies living things.

Biological control : Management of pests within reasonable limits by encouraging natural

predator/prey relationships and avoiding use of toxic chemicals.

Blood : A liquid medium circulating in the bodies of many animals. Blood carries food and

oxygen to the tissues and carries waste products, including carbon dioxide, away from the
tissues. Earthworms and humans both have a red, hemoglobin-based blood for oxygen

transport.

Breathe : To carry on activities to permit gas exchange. Humans and land- dwelling vertebrates

do this by expanding the lung cavity to draw air in, and reducing it to force air out. Worms

conduct gas exchange through their moist skin, but do not actually breathe.

Breeders : Sexually mature worms as identified by a clitellum.

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