Biogeochemical Cycles

The nitrogen found in the atmosphere is not in a form that plants or animals can use.  What converts it into a usable form?

• Bacteria
• Photosynthesis
• Decomposition of organisms
• Fungi

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Tags

NGSS.MS-LS1-6

How do decomposers benefit the carbon cycle?

• Dead organic matter is broken down and carbon dioxide is released into the air.
• Carbon is leaked into the atmosphere when fossil fuels are burned.
• Volcanoes and fires vent large amounts of carbon dioxide into the sky.
• Decaying organisms are essential for oxygen to be released back into the food web.

Tags

NGSS.MS-LS2-3

How do decomposers benefit the carbon cycle?

• Dead organic matter is broken down and nitrogen is released into the air.
• Carbon is leaked into the air when fossil fuels are burned.
• Decaying organisms are essential for carbon to be released back into the food web.
• Volcanoes and fires vent large amounts of carbon dioxide into the sky.

Tags

NGSS.MS-LS2-3

Which of these best describes the interaction of living things with the land?

• Organisms depend on soil, but the development of soil does not depend on organisms.
• Living organisms do not play an essential role in the development of fertile soil.
• Plants and animals that live and die in soil return nutrients to the soil.
• Plant roots are not strong enough to weather rock they encounter while growing.

How do living organisms return carbon to the atmosphere in the carbon cycle?

• nitrogen fixation and combustion
• death and decomposition and respiration
• respiration and photosynthesis
• nitrogen fixation and photosynthesis

Tags

NGSS.HS-LS2-5

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• This is not a correct diagram of any cycle.

Tags

NGSS.MS-ESS2-4

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Nitrogen in the atmosphere is not available.  Free nitrogen has to be changed into a usable form in a process called __

• nitrogen fixation
• transpiration
• precipitation
• respiration

Tags

NGSS.MS-LS2-3

What cycle is demonstrated in the diagram?

• TheLlife cycle
• The Water cycle
• The Carbon cycle
• The Nitrogen cyckle

Tags

NGSS.MS-ESS2-4