Cycling of Matter

How do plants obtain nutrients in most ecosystems?

• From other animals

• From air, water, and soil

• From sunlight only

• From rocks only.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the role of producers in the nutrient cycle?

• They consume other organisms

• They begin the cycle

• They end the cycle

• They decompose matter.

Tags

NGSS.MS-LS2-3

What do plants and other organisms obtain from weathered pieces?

• Water

• Nutrients

• Light

• Oxygen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What process converts carbon into fossil fuels over millions of years?

• Photosynthesis

• Cellular respiration

• Fossilization

• Combustion

Tags

NGSS.MS-ESS2-2

What type of energy is produced in cellular respiration?

• Chemical energy

• Light energy

• Thermal energy

• Mechanical energy

Tags

NGSS.MS-LS1-7

What process captures nitrogen gas from the air and changes it into a form that plants can use?

• Photosynthesis

• Nitrogen fixation

• Respiration

• Denitrification

Where do nitrogen-fixing bacteria commonly live?

• In the ocean

• In the atmosphere

• In water, soil, or on plant roots

• In rocks

What is the role of decomposers in the nitrogen cycle?

• Fix nitrogen

• Release nitrogen from dead organisms

• Absorb nitrogen

• Convert nitrogen to oxygen

Tags

NGSS.MS-LS2-3

What happens during nitrification?

• Nitrogen gas is converted to ammonia

• Ammonia is converted to nitrites and nitrates

• Nitrates are converted to nitrogen gas

• Nitrogen is absorbed by plants

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the significance of nitrogen for organisms?

• It is used for photosynthesis

• It is a building block of proteins

• It is a source of energy

• It is used for respiration

Tags

NGSS.MS-LS2-1