ESS 2.1 & 2.2

Choose the abiotic factor.

• A sugar maple tree

• Predation

• Water temperature

• Leaves on a tree

Tags

NGSS.MS-LS2-3

The total mass of living tissue at each trophic level can be shown in a(n)

• energy pyramid
• pyramid of numbers
• biomass pyramid
• biogeochemical cycle

Why are food chains, such as the one shown, limited to 4-5 organisms?

• There are not more organisms in the ecosystem
• Organisms must share resources
• Energy transfers are inefficient
• They are only limited when organisms are living on land.

Tags

NGSS.MS-LS2-3

Amount of energy transferred from one trophic level to the next

• Cellular Respiration

• 10% Rule

• Energy Pyramid

• Photosynthesis

Tags

NGSS.MS-LS2-3

Increase in concentration of a pollutant in organisms as you move up a food chain

• Biomagnification

• 10% Rule

• Bioaccumulation

• Metabolism

Tags

NGSS.MS-ESS3-4

Increase in the concentration of pollutants within an organism over time

• Biomagnification

• 10% Rule

• Energy Pyramid

• Bioaccumulation

Which are limiting factors that limit producers within an ecosystem? (Check all that apply)

• Cold winter temperatures

• Air pollution

• Oxygen

• Nutrients

Tags

NGSS.MS-LS2-1

What is the most dangerous thing about persistent organic compounds?

• The do not biodegrade and remain in the ecosystem for a long time.

• They are more harmful to human health than ecosystems.

• They are transported farther distances.

• They are toxic to many animals and some plants.

Tags

NGSS.MS-PS1-3

Select all POPs (persistent organic compounds).

• DDT

• DNA

• PCB

• CO2

• Dioxin

What would cause a decrease in grasshoppers? (Select all that apply)

• A decrease in plants.

• An increase in scorpions.

• An increase in kit foxes.

• An decrease in kit foxes.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4