Nitrogen Cycle

Nitrogen is an important element used by all living things.  It cycles from:
The Ground (both soil and water, of course) To the Air  Back to the Ground.
Organisms (animals, plants, fungi, bacteria…etc.) actively participate in the Nitrogen Cycle .

20170527 Nitrogen Cycle b
(Click to Enlarge)

Explanations for Vocabularies:

  • Ammonia: A nitrogen-rich chemical that occurs naturally in animal feces / urines.
  • Decomposition: This process is done mostly by bacteria and fungi, and it breaks a dead organism’s body down into smaller molecules.
  • Denitrificaiton: This process is done by bacteria, and it turns nitrates and nitrites into nitrogen gas.
  • Nitrites and Nitrates: These 2 nitrogen-rich molecules are nutrients useful to plants.
  • Nitrificaiton: This process is done by bacteria, and it turns ammonia into nitrates and nitrites.
  • Nitrogen Fixation: This process is done by bacteria, and it turns nitrogen gas into ammonia.
  • Wastes: In biology, the word “wastes” stand for materials such as feces (poop) and urine (pee).

Next Generation Science Standards:

MS-LS2-1. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.

MS-LS2-2. Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.

MS-LS2-3. Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.

MS-LS2-4. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.

HS-LS1-5. Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.

HS-LS1-6. Construct and revise an explanation based on evidence for how carbon, hydrogen, and oxygen from sugar molecules may combine with other elements to form amino acids and/or other large carbon-based molecules.

HS-LS2-3. Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions.

HS-LS2-4. Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.

HS-LS2-5. Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere.

What Science Does this Comic Teach?

Unit: Anatomy and Phsiology

⇒Chapter: Cycles of Matter

⇒Topic: Nitrogen Cycle

Additional Information

Organism

It means a “living thing”…  Whether it is big (such as a dog) or small (such as a bacterium), all living things are called “organisms”.

Questions?  Comments?

For any questions, comments, or requests, contact us.

LEAVE A REPLY

Please enter your comment!
Please enter your name here