Matter Cycles

Food is a vital part of our survival. There are also abiotic factors influence our survival, such as water. Three important elements that are critical for us and other organisms are carbon, nitrogen and oxygen. Today, we modeled how nitrogen moves through the ecosystem.

What to know about nitrogen:

• Most of the air we breathe is nitrogen
• Special bacteria break the nitrogen down so plants can use  it
• Animals can only get nitrogen from plants (either directly or indirectly)
• Nitrogen is released through decompostion

Period 1 HW only: Complete the 3 questions about the carbon cycle.
Period 2 & 4: Don't think you are getting off easy. You have to do the worksheet for CW on top of Friday's lesson.