Question

what are the functions of water? how much water should a person consume each day?

Explanation:

For "What are the functions of water?":

Water has multiple vital functions. It is a solvent, enabling transport of nutrients and waste in organisms. It regulates body temperature (e.g., through sweating), lubricates joints, is involved in metabolic reactions (like hydrolysis), and provides structural support in cells (as a major component of cytoplasm). In ecosystems, it supports aquatic life, is part of the water cycle, and helps in weathering and erosion processes.

General guidelines: For adult men, about 3.7 liters (≈15.5 cups) of total water (from beverages and food) daily; for adult women, about 2.7 liters (≈11.5 cups) daily. Factors like activity level, climate, health (e.g., pregnancy, illness) can modify these needs. Thirst is a basic indicator, but specific groups (athletes, people in hot climates) may need more.

Answer:

Water functions include: 1. Solvent for nutrient/waste transport in organisms. 2. Regulates body temperature (e.g., sweating). 3. Lubricates joints. 4. Involved in metabolic reactions (e.g., hydrolysis). 5. Provides cellular structural support. 6. Supports aquatic ecosystems, part of water cycle, aids weathering/erosion.

For "How much water should a person consume each day?":