Answer:
Internal Cycling
Explanation:
Internal cycling starts when the nutrients transform into ecosystems. The plants through their roots take the necessary ingredients and built them in the tissues. When tissues grow, the nutrients go back to the ground in the form of dead organic matter.
Microbes transform the organic nutrients into minerals, which are again available to the plants.
Answer:
soil,air and water
Explanation:
give nutrients to plants and release oxygen
If you have too much CO2 in your blood, you will hyperventilate (or breath faster) to get rid of the CO2 and get more oxygen
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