Matter and Energy Cycles

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

• 10%

• 30%

• 60%

• 90%

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

The process of plants using energy from the sun to create the first trophic level is called?

• Chemosynthesis

• Photosynthesis

• Lightsynthesis

• Heterotroph

Tags

NGSS.MS-LS1-6

What animals get their energy from the mouse?

• Owl

• Hawk

• Fox

• Rabbit

Tags

NGSS.MS-LS2-3

The grasshopper in the diagram is a

• Producer

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

The snake in the diagram is a

• Producer

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer

Answer explanation

It is a secondary consumer because it gets eaten by the hawk. If it is being eaten by something else, it cannot be the tertiary consumer.

Which of the following removes carbon from the atmosphere?

• Combustion

• Respiration

• Decomposition

• Photosynthesis

Tags

NGSS.MS-LS1-6

Which of the following add carbon dioxide to the atmosphere?

• Volcanoes

• Plant and Animal Respiration

• Combustion of Fossil Fuels

• All of these

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• 
  higher levels of carbon dioxide and other greenhouse gases in the atmosphere

• 
  lower levels of ozone in the atmosphere

• 
  lower levels of nitrogen in the atmosphere

• higher levels of oxygen in the atmosphere

Tags

NGSS.MS-ESS3-5

Water is given off through the leaves as water vapor.

• Condensation

• Transpiration

• Evaporation

• Precipitation

Tags

NGSS.MS-ESS2-4