1. Biogeochemical cycles
Key Point #1: Elements and compounds move through the ecosystem Remember: matter is neither created nor destroyed!!!
Let’s talk about 3 things cycling through ecosystems
Water
Carbon
Nitrogen

2. WATER CYCLE

3. Water Cycle Transpiration - Evaporation of water from plants
Condensation - changing of water vapor (water in the air) into a liquid
Precipitation - falling of water back to the earth as snow, sleet, hail, or rain
Evaporation - process of water becoming gas

4. Water Cycle Transpiration - Evaporation of water from plants
Condensation - changing of water vapor (water in the air) into a liquid
Precipitation - falling of water back to the earth as snow, sleet, hail, or rain
Evaporation - process of water becoming gas

5. Transpiration
Evaporation

6. There is water present in both plants and bodies of water (rivers, lakes, oceans).
a. Water leaves a plant and enters the atmosphere through the process of TRANSPIRATION.
b. Water leaves a body of water and enters the atmosphere through the process of EVAPORATION.

7. Water Cycle Transpiration - Evaporation of water from plants
Condensation - changing of water vapor (water in the air) into a liquid
Precipitation - falling of water back to the earth as snow, sleet, hail, or rain
Evaporation - process of water becoming gas

8. When it is in the atmosphere, it is called water vapor
When it is in the atmosphere, it is called water vapor. It will eventually become a cloud through the process of condensation.

9. Water Cycle Transpiration - Evaporation of water from plants
Condensation - changing of water vapor (water in the air) into a liquid
Precipitation - falling of water back to the earth as snow, sleet, hail, or rain
Evaporation - process of water becoming gas

10. The water falls from the cloud as some form of :’( weather through a process of precipitation.

11. CARBON CYCLE

12. Carbon Cycle 1. There is a lot of carbon dioxide (CO2) in the air.
2. CO2 is taken out of the air by plants through photosynthesis.

13. Carbon Cycle
3. BOTH plants and animals release CO2 into the air through respiration.

14. Carbon Cycle 4. Decaying plants, animals, and waste (decomposition)
after millions of years will be changed into fossil fuels.

15. Carbon Cycle
5. Fossil fuels can be burned by automobiles, releasing carbon dioxide back into the atmosphere. This is called combustion.

16. NITROGEN CYCLE

17. Nitrogen Cycle There is A LOT of nitrogen in the air but plants and
animals CAN’T use
it!
80% of the Earth’s atmosphere is nitrogen

18. Nitrogen Cycle To use the nitrogen, bacteria “fix” nitrogen from the
air for the plants =
called nitrogen
Fixation
Bacteria, that live on the roots of some plants, change nitrogen into ammonia, a form of nitrogen plants can use.

19. Animals get nitrogen from the plants by eating them
Animals get nitrogen from the plants by eating them. When plants and animals die, their decaying bodies release nitrogen back through the process decomposition.

20. Phosphorous Cycle

21. Phosphorous Cycle
Phosphorous is a key component of genetic material (DNA and RNA)
Phosphorus comes from erosion of rocks and decomposition
It is absorbed by plant roots, we get it by eating them

22. What cycles?

23. Combustion

25. Hold up 2 cards!
Decomposition

29. TWO CARDS

31. Transpiration

33. OKAY, now cut the backs of cards

34. This is the process where water is taken from the ground by a plant and returned to the environment.

36. Kobe uses sugar to keep going during a big game. He breathes out CO2.

37. This is the process where water turns from a liquid into a gas.

39. N2 is changed to a usable form of nitrogen in NO3 during

41. Snow, sleet, hail and rain are examples of this process.

42. FOLDER!
Worksheet
Daily quiz
Grade sheet