Levels of Ecosystem

A polar bear interacts with abiotic factors in its environment in all of the following ways EXCEPT by —

• sliding across the ice.
• swimming in the cool waters.
• eating fish that it catches.
• blending into the snow to hide.

Which of the following is an abiotic factor that a penguin could interact with in an Arctic environment?

• A ray of sunlight that makes the penguin blend into the surface of the water
• A shark that sees the penguin and swims toward it under the water
• A polar bear that stalks the penguin in hopes of catching and eating it
• Another penguin that could be a potential mate

Which of the following represents the lowest level of organization in this forest environment?

• The squirrels eating the nuts and acorns from the trees
• A group of bushes providing shade for small insects
• The group of squirrels mating to produce offspring
• A single deer standing near the flowing river

The shark in the water of the Arctic environment is —

• an abiotic factor that swims in biotic ocean water.
• an abiotic factor the breathes biotic dissolved oxygen that passes into the shark's gills.
• a biotic factor that feeds on other biotic factors.
• a biotic factor that needs the cool temperature of the biotic Arctic water to survive.

Which of the following is a biotic and an abiotic factor interacting in this pond environment?

• Duck and fish
• Fish and worm
• Bird and cattail
• Frog and water

Which of the following is the highest level of organization in this forest environment?

• A group of one-hundred pine trees living closely together in the forest
• All the organisms living and interacting together in the environment
• One hawk flying in the sky over the forest
• A group of shrubs in a part of the environment

The duck in this environment interacts with the —

• mosquitos, an abiotic factor, by getting bit by these insects.
• pond water, an abiotic factor, by paddling around the pond.
• trees, an abiotic factor, by resting under its shade.
• frog larvae, an abiotic factor, by eating the larvae in the water.

The stingray resting on the bottom of the reef represents —

• a population, the highest level of organization in an ecosystem.
• an ecosystem, the lowest level of organization in a community. water, an abiotic factor, by paddling around the pond.
• an organism, the lowest level of organization in an ecosystem. , an abiotic factor, by resting under its shade.
• a community, the highest level of organization in a community.

The palm trees in this oasis are —

• biotic factors that absorb biotic sunlight to undergo photosynthesis.
• biotic factors that provide shade to other biotic factors.
• abiotic factors that absorb abiotic water to grow.
• abiotic factors that provide a home a biotic lizards.

The picture above shows a field of wildflowers. Which of the following is NOT an abiotic factor interacting with a biotic factor in this environment?

• Rain that gives the flowers water
• Soil that gives the flowers nutrients
• Sunlight that helps the flowers make energy
• Butterflies that land on and pollinate the flowers