Science 7 Unit A Review

A problem with invasive species is that they can have no natural predators and multiply very quickly

• True

• False

What is an example of an ecosystem?

• Living things of the same kind that are able to reproduce.

• All individual of one species living in a certain place at the same time.

• A variety of living things interacting in marsh.

• The needs of water, energy, food, oxygen, and suitable living conditions of all living things.

Which of the following is an example of an abiotic factor below

• Moose

• Water

• Snake

• Bacteria

Which of the following is an example of a biotic factor?

• Water

• Temperature

• Clouds

• Wolf

An ecosystem is best defined as:

• All populations of different species living and interacting in the same place.

• Living things of the same kind that are able to reproduce.

• A place on earth where living things interact with other living and non-living things.

• All individual of one species living in a certain place at the same time.

food+oxygen------ CO2+ H2O+energy is a word equation for which of the following processes?

• Circulation

• Cellular Respiration

• Photosynthesis

• Water Cycle

A plant that eats insects is a:

• herbivore

• omnivore

• carnivore

• decomposer

Below, what is the correct way in which energy moves through an ecosystem?

• Carnivore- Omnivore- Herbivore-Producer

• Solar(Sun)-Producer-Carnivore-Herbivore

• Producer-Herbivore-Carnivore-Solar(Sun)

• Solar(Sun)-Producer-Herbivore-Carnivore

Many things change in ecosystems. What of the following can greatly impact ecosystems?

• Weather

• Competition

• Predation

• All of the above

Here is the following food chain:

river weeds----small fish-----arctic char-----grizzly bear

What would happen if the grizzly bear population increased (got bigger)?

• The number of arctic char would increase (get bigger)

• The number of small fish would decrease (get smaller)

• The number of arctic char would decrease (get smaller)

• The amount of river weeds would increase (get bigger)