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 STUDENT GLOSSARY
GRADE 4

Prepared by Melanie Walker


Adaptation: a special feature of an organism. This feature helps the organism to survive in the environment.

Algae: tiny plants made from one to many cells. The single-celled algae can only be seen with a microscope. Algae live near the surface of lakes and ponds.

Alkaline ponds: ponds which contain a large amount of salt. Alkaline ponds look very different than normal ponds.

Altitude: how high an area is above sea level.

Amphibian: a type of animal that can live on land and in the water. It is cold-blooded and can breathe through its skin or lungs. An example of an amphibian is the Tiger Salamander.

Antennae: the long pointed objects found on the heads of insects. They are used to touch and taste the environment.

Aquatic: things that are found in water. Aquatic plants grow in water.

Arid: an area of land that is very hot and gets very little rain or snow. A desert is an arid place.

Behaviour: how an organism reacts to certain things.

Biological control: a way to get rid of insect pests, like aphids, by using natural things, like predatory bugs.

Biome: a large area such as a desert, forest, grasslands or wetlands.

Blue List: a list of plant and animal species created by wildlife biologists. Species on this list are not in trouble right now, but could become endangered if humans are not careful.

Burrow: a hole in the ground that is a shelter and a home for animals such as jackrabbits, foxes and burrowing owls.

Camouflage: the special markings that an animal uses to hide from its enemies.

Carnivore: an animal that eats only meat.

Cold-blooded: animals like amphibians need the warmth of the sun to heat them. Cold-blooded animals can not make their own body heat.

Conservation: protecting the environment, especially wildlife habitats and natural ecosystems.

Decomposers: organisms like bacteria, earthworms and small bugs that eat dead organic material and break it down into tiny soil particles.

Ecosystem: a group of plants and animals that rely on each other to survive.

Endangered: an animal or plant species that has very few of its type left in the world.

Environment: surrounding conditions which affect the plants and animals living in a place.

Extinct: a plant or animal species that does not exist any more.

Extirpated: the loss of a plant or animal species from a part of the area it used to inhabit.

Food Chain: a series of plants or animals in which one serves as food for the next one in the chain. An example of a food chain could be -- grass is eaten by a cow, then the cow is eaten by humans.

Graze: the way cattle eat plants and grasses while they are at pasture.

Habitat: the environment which provides food, shelter and space for a plant or animal species.

Herbivore: an animal that eats only plants.

Hibernation: a deep sleep that some amphibians, mammals and reptiles have during the winter months.

Hypothesis: a smart guess at why something is happening. This guess is based on information you already have but needs more information to prove.

Insect: a small invertebrate with wings and three pairs of legs and a hard covering instead of skin or fur.

Invertebrate: an organism that does not have a backbone like other animals.

Larvae: the organisms that hatch from eggs and then live on their own until they grow into adults. Tiger Salamanders start off as larvae in ponds.

Mammal: a warm-blooded animal that gives birth to live babies and feeds them with milk glands. Animals like mice, bats, whales and humans are mammals.

Migration: moving from one habitat to another during certain times of the year. The Canada Goose flies south for the winter months and returns in the spring to Canada.

Moisture: water in the form of rain or snow that is important in an environment.

Nutrient: a source of nourishment or food for living things.

Omnivore: an animal species that eats both plants and animals.

Organisms: living creatures, like plants or animals.

Pesticides: chemicals used by people to kill pests such as insects

Predator: an animal that eats other animals for food.

Prey: a creature that is hunted and eaten by a larger creature. Worms are prey for birds.

Red List: a list of plant and animal species created by wildlife biologists. Species on this list are endangered and may become extinct if humans do not help them to survive.

Reintroduction: putting endangered animals or plants back into places where they used to live.

Reptile: a cold-blooded creature that has scales instead of skin. Snakes, turtles, and lizards are reptiles.

Rodents: small mammals that have special teeth for gnawing. Porcupines, rats, squirrels and mice are rodents.

Shelter: a place to hide from danger and bad weather. A shelter is a home.

Species: a group of plants or animals that look and act the same. They live in similar places and can reproduce their kind.

Status: the importance of one species compared with another.

Territory: an area of land that a creature lives in and defends.

Threatened: a plant or animal species that may become endangered.

Toxin: any substance which can kill an animal or plant or make it sick.

Unique: an animal or plant that is different than all others.

Wetlands: an area of land that has lots of marshes, ponds and rivers.

Venom: a poisonous liquid that some animals use to paralyze their prey. Venom can be injected into the prey through the bite of a snake.

this section sponsored by: Industry Canada

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675 Belleville Street,
Victoria, British Columbia,
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