In the water cycle, respiration and transpiration are examples of:

Respiration and transpiration are crucial biological processes that contribute to the water cycle. Respiration refers to the process by which living organisms, including animals and plants, convert glucose and oxygen into energy, producing water and carbon dioxide as byproducts. Similarly, transpiration is the process through which plants release water vapor into the atmosphere from small openings in their leaves. Both processes are fundamentally linked to the activity and life functions of organisms, emphasizing their role in biological systems.

Biological functions are activities and processes that sustain life, and respiration and transpiration are key examples. These functions are essential for energy production in living organisms and for maintaining the moisture balance in the environment, thereby influencing the overall dynamics of the water cycle. Understanding them as biological functions underscores the interconnectedness of life processes and the environment, reinforcing the significance of living organisms in regulating the water cycle.