Question

match the process with the correct description. each answer may be used more than one time.
process in which nitrogen gas is changed into a form that can be used by plants and animals.
the process that animals and plants do to break down sugars and return carbon to the atmosphere as carbon dioxide.
process in the water cycle in which water evaporates from the surface of leaves.
process in the carbon cycle that plants use to bring in carbon from the atmosphere and sunlight and make their own food.

Explanation:

1. Nitrogen - fixing bacteria convert nitrogen gas into a usable form for plants and animals in the nitrogen - cycle.
2. Respiration is the process by which animals and plants break down sugars and return carbon dioxide to the atmosphere.
3. Transpiration is the process in the water - cycle where water evaporates from the surface of leaves.
4. Photosynthesis is the process in the carbon - cycle that plants use to bring in carbon from the atmosphere and sunlight to make their own food.

Answer:

1. Nitrogen - fixing (in nitrogen cycle)
2. Respiration
3. Transpiration
4. Photosynthesis