Energy and Nutrient

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

Tags

NGSS.MS-LS2-3

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Biomass refers to

• Chemical Energy
• Light Energy
• Rank in the feeding heirarchy
• Amount of living tissue in an ecosystem

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

Which of the following would provide the most energy in an ecosystem?

• Producers
• Herbivore
• Omnivore
• Carnivore

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A wolf eats a rabbit, that just ate some berries.  What would you call the rabbit?

• Producer
• Omnivore
• Primary Consumer
• 2nd order Heterotrph

How does carbon dioxide leave the atmosphere and become part of the food chain?

• through transpiration

• through photosynthesis

• through factory emission

• sunlight

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How have humans contributed to the amount of carbon dioxide in the air?

• driving cars

• burning fossil fuels

• factories

• all of these

Tags

NGSS.MS-ESS3-5

where do animals get nitrogen from?

• from the soil

• from the water they drink

• directly from the air

• from the plants they eat