B13B

What is ecosystem stability?

• The ability of an ecosystem to change rapidly

• The ability of an ecosystem to resist change and return to equilibrium

• The ability of an ecosystem to increase biodiversity

• The ability of an ecosystem to decrease energy flow

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

How does greater biodiversity affect ecosystem stability?

• It decreases stability

• It has no effect on stability

• It increases stability

• It disrupts stability

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What happens when the cycling of matter is disrupted?

• Producers synthesize more food

• Ecosystem stability increases

• Producers struggle to synthesize new food

• Energy flow increases

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the role of producers in the cycling of matter?

• They consume dead organisms

• They synthesize food from environmental matter

• They break down waste materials

• They are primary consumers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is released into the environment when consumers break down food?

• Energy

• Nutrients

• Matter

• Water

Tags

NGSS.MS-LS2-3

What do decomposers do in an ecosystem?

• They produce energy

• They break down dead organisms and waste materials

• They consume producers

• They increase biodiversity

Tags

NGSS.MS-LS2-3

What is a food web?

• A model that shows energy flow in a single path

• A model that describes many food chains operating together

• A model that tracks waste products

• A model that shows only producers and consumers

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

What is the initial source of energy in an ecosystem?

• Producers

• Decomposers

• The Sun

• Primary consumers

Tags

NGSS.MS-LS1-6

What does the 10% Rule refer to?

• 10% of energy is lost as heat

• 10% of energy is passed to the next trophic level

• 10% of matter is recycled

• 10% of organisms are decomposers

Tags

NGSS.MS-LS2-3

What do ecological pyramids show?

• Only the biomass in an ecosystem

• The biomass, energy, or numbers at each trophic level

• Only the energy flow in a food web

• Only the number of producers

Tags

NGSS.MS-LS2-3