Tutor: Ecosystems

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

Tags

NGSS.MS-LS1-6

Autotrophs make up the _______ level in all ecosystems.

• First
• Second
• Third
• Fourth

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. 

The image provided is an example of a(n):

• Producer
• Autotroph
• Consumer
• Insect

Tags

NGSS.MS-LS2-3

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

Which of the following would be the definition of a detritivore?

• Animals that eat insects.
• Organisms that feed on rocks, recycling the nutrients back into the ground.
• Organisms that eat only pants
• Things that feed on dead organisms, recycling the nutrients back into the ground.

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

The living portions of the ecosystem.

• Biotic factors
• Abiotic factors

Water temperature would be an example of ...

• A biotic factor
• An abiotic factor

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Tags

NGSS.MS-LS1-6