What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

Tags

NGSS.MS-LS2-3

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In an energy pyramid, energy_______ as you move up the pyramid.

• Increases
• Decreases
• Stays the same
• Changes up and down

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

Tags

NGSS.MS-LS2-3

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Tags

NGSS.MS-LS2-3

Consists of all the biotic and abiotic factors of the environment...

• population

• community

• ecosystem

• all of the above

Tags

NGSS.MS-LS2-3

A group of organisms of the same species in any given area...

• population

• community

• individuals

• community

Group of populations in an area.

• Organism

• Ecosystem

• Community

• Biosphere

Where life is found on earth.

• Community

• Habitat

• Ecosystem

• Biosphere

Limiting factors that affect all populations in similar ways, regardless of population size are

• tolerant

• density dependent

• carrying capacity

• density independent

Tags

NGSS.MS-LS2-4