In summer, when you walk into the green orchard, you will immediately feel the fresh and moist air, which is mainly due to the _ _ _ _ _ and _ _ _ _ functions of green plants.

The process that green plants convert carbon dioxide and water into organic matter (such as starch) that stores energy and releases oxygen through chloroplasts is called photosynthesis. Green plants consume carbon dioxide in the atmosphere, release oxygen through photosynthesis, maintain the relative balance between carbon dioxide and oxygen in the biosphere, and make people feel the air is fresh. Transpiration of green plants refers to the process that water is released into the atmosphere in the form of water vapor from the stomata of leaves, which increases the humidity of the atmosphere and precipitation and makes people feel the air moist. Therefore, when you walk into the green orchard in summer, you feel the air is fresh and humid, which is the result of photosynthesis and transpiration of green plants.

So the answer is: photosynthesis, transpiration.