Unit 1 Ecology

Grass is eaten by a prairie dog. The prairie dog is eaten by a coyote. This is an example of

• omnivore

• herbivore

• food chain

• detrotivore

A bird eats a worm. Who is the predator?

• worm

• bird

• none

• worm & bird

The scientific study of interactions among organisms and between organisms and their environment

• biology

• ecology

• chemistry

• physics

Which is an example of an abiotic element changing an area?

• introducing a new type of grass

• water flooding the area

• algea growing on crabgrass

• 2 species competing

A group of ecosystems that share similar climates and typical organisms

• biosphere

• environment

• biome

• abiotifc factor

the natural home or environment of an animal, plant, or other organism.

• biosphere

• habitat

• biome

• community

A community is several species of animals interacting, while a population is

• members of 1 species in an area

• the biotic and abiotic factors of an area

• the nonliving elements of a habitat

• a single organism

Two members of the same species fight over who gets a certain food. Members of different species try to take over a certain nesting area. These are both examples of

• competition

• population

• mutualism

• commensalism

If scientists are studying the egrets, herons, marsh crabs, and cordgrass, but not the water or rocks in a salt marsh, what level of organization would they be studying?

• organism

• population

• community

• ecosystem

When there is a lot of pollution, rain can be acidic, harming plants and animals. What is this an example of?

• competition between a population and a community

• a mutualistic type of symbiosis

• an abiotic factor affecting an ecosystem

• an individual affecting a community