Using the model of an ecosystem below, select the choice with three abiotic factors that can be seen or inferred.

• water, seaweed, bird

• rock, water, fish

• water, dolphin, seaweed

• crab, bird, fish, seastars

• water, temperature, sun

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Which level of ecological organization contains both biotic (living) factors and abiotic (nonliving) factors?

• Ecosystem

• Community

• Population

• Individual

Tags

NGSS.MS-LS2-3

Predict how the removal of a top predator could affect the energy flow in an ecosystem.

• Increase in tertiary consumers, decrease in producers

• Decrease in secondary consumers, increase in primary consumers

• Increase in primary consumers, decrease in producers

• Decrease in quaternary consumers, increase in producers

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

In this ecosystem, a tornado strikes and takes out all the tall trees that the hawks rely on for nesting. Because of this, the hawk population is going to ________. This results in the increase in the ________ population and a cascading decrease in the ________ population.

• increase, mouse, rabbit

• decrease, bird, rabbit

• stays the same, grasshopper, mouse

• decrease, mouse, grasshopper

• increase, rabbit, bird

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If a drought caused a significant reduction in the producer population, what would be the likely chain of events in the ecosystem?

• Decrease in primary consumer population, decrease in secondary consumer population

• Increase in primary consumer population, increase in secondary consumer population

• Decrease in primary consumer population, increase in secondary consumer population

• Increase in primary consumer population, decrease in secondary consumer population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organism is the producer in the aquatic food chain?

• small fish

• tuna

• one celled life

• large shark

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What role does the mackerel play in the aquatic food chain?

• Producer

• Primary consumer

• Secondary consumer

• Tertiary consumer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which organism is the primary consumer in the aquatic food chain?

• polar bear

• plankton

• arctic cod

• krill

Tags

NGSS.MS-LS2-2

What is the correct order of the energy pyramid from bottom to top?

• Producers, Primary Consumers, Secondary Consumers, Tertiary Consumers

• Tertiary Consumers, Secondary Consumers, Primary Consumers, Producers

• Primary Consumers, Producers, Tertiary Consumers, Secondary Consumers

• Secondary Consumers, Producers, Tertiary Consumers, Primary Consumers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following best describes the movement of energy in an ecosystem?

• Energy is magnified as it moves up the trophic levels, and tertiary consumers store the most energy in a food web.

• Energy is constantly recycled by decomposers for use by producers.

• Energy is absorbed by plants through water and soil and then moves up the food chain through consumers.

• Energy is harnessed by producers, and available energy decreases with each trophic level transfer.

Tags

NGSS.MS-LS2-3