1.

Which of the following images shows a living organism interacting with a biotic factor in its environment?

A.
A small bird stands in a puddle of water looking at it's reflection.

B.
A koala bear is shown.

C.
A small green plant grows in the ground.

D.
An orca is rising from the ocean to expose its forward half, including an outstretched flipper.
2.
Which of the following shows the correct order from smallest to largest?

A.
communityright arroworganismright arrowpopulationright arrowecosystem

B.
organismright arrowpopulationright arrowcommunityright arrowecosystem

C.
populationright arrowecosystemright arrowcommunityright arroworganism

D.
organismright arrowcommunityright arrowecosystemright arrowpopulation
3.
What conclusions can you draw from an experiment in which three different types of plants are grown in a greenhouse under different watering conditions?

Plant Type No Water Low Water Moderate Water Heavy Water
Plant A grew 1 inch in 4 weeks and died at 11 weeks grew 1 inch in 15 weeks died at 15 weeks died at 5 weeks
Plant B died at 3 weeks died at 15 weeks grew 6 inches at 15 weeks grew 12 inches at 15 weeks
Plant C died at 6 weeks grew 2 inches at 15 weeks grew 4 inches at 15 weeks died at 11 weeks

A. Plants A and B could thrive in similar ecosystems.

B. Plant A could thrive in an ecosystem where water is absent.

C. Plant C could thrive in an ecosystem where water availability is either very high or very low.

D. Plant B could thrive only in moderate or heavy water ecosystems.
4.
Which of the following is an abiotic factor that allows the organisms shown in the image to survive? tundra

A. birds

B. sunlight

C. salt

D. rocks
5.
Which of the following images shows a community of animals?

A.
A herd of buffalo grazes in a grassland.

B.
A school of fish swims through the ocean.

C.
Colorful tropical fish and other aquatic creatures fill a rocky underwater scene.

D.
A flock of flamingos stands in a lake.

A. A herd of buffalo grazes in a grassland.