Nature Cycles

What do all organic molecules contain?

• Oxygen

• Nitrogen

• Water

• Carbon

Tags

NGSS.HS-LS1-6

NGSS.HS-LS2-5

Why do living things need nitrogen?

• to build new cells

• to get rid of wastes

• to cool them off

• to carry nutrients

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Where can primary succession begin?

• in a place with only rocks

• in a place with trees

• in a place with crops

• in a place with weeds

What plant will most likely grow first in secondary succession?

• pine tree

• lichen

• crab grass

• hardwood tree

Tags

NGSS.MS-LS1-5

Which of these might be a climax species?

• the first species in an area

• the first insects to eat lichens

• the most common weeds in a farm field

• the oldest trees in a forest

What is the process where bacteria in soil change nitrogen gas into forms plants can absorb?

• Carbon cycle

• Condensation

• Nitrogen fixation

• Evaporation

Which word best describes how carbon moves between the environment and living things?

• Carbon cycle

• Nitrogen cycle

• Oxygen cycle

• Water cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which word best describes how nitrogen moves between the environment and living things?

• Carbon cycle

• Nitrogen cycle

• Oxygen cycle

• Water cycle

Name the process where a substance burns.

• Combustion

• Decomposition

• Respiration

• Transpiration

Name the process where plants release water vapor.

• Combustion

• Decomposition

• Respiration

• Transpiration