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Using bamboo results in an increased use of forest trees. Bamboo is a grass, not a tree. I don't see how using more bamboo would increase your usage of trees. This option is incorrect.
Contour plowing is when your plow around the contour lines (which are basically like elevation lines) of a hill or slope. This actually reduces soil erosion and lasting effects of natural storms and disasters, so it does not result in a need for more land. This option is incorrect.
Setting irrigation systems to run longer results in a reduction of water use. Irrigation is a system of watering, so you need water for it. It would not reduce water use. This option is incorrect.
Building more wind farms results in a reduction of fossil fuel use. If you are getting your power from renewable resources like the wind or the sun, you will not need to use as many fossil fuels, and this would reduce their use. This option is correct.
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Answer:
June 21st is the longest day of the year December 21st is the shortest
Explanation:
They are releasing energy from organic molecules through aerobic respiration. In cell respiration, you are releasing energy, and in this case you are releasing energy from organic molecules. Because they are a single-celled organism using oxygen and releasing carbon, the process being used is aerobic respiration.
