describe the role of water in biosphere?

It makes rain, influences weather and supports life.

Since this is not my area of expertise, I searched Google under the key words "water biosphere" to get these possible sources:

http://ess.geology.ufl.edu/ess/Introduction/Biosphere.html
http://www.sage.wisc.edu/atlas/maps.php?catnum=4&type=Water%20Resources

After reading these sources, you might want to search again under "hydropshere."

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps a little more. Thanks for asking.

The role of water in the biosphere is crucial for supporting and sustaining life in several ways. Water is known as the "universal solvent" because it has the ability to dissolve a wide range of substances, making it an essential medium for chemical reactions within living organisms.

1. Habitat: Water acts as a habitat for a vast array of organisms. It provides a suitable environment for aquatic life forms such as fish, amphibians, and various microscopic organisms. Aquatic habitats, including oceans, lakes, and rivers, support diverse ecosystems and play a significant role in the biosphere.

2. Transport medium: Water serves as a transportation system within organisms. In plants, water moves through the root structures to the leaves, carrying essential nutrients and minerals. This process, known as transpiration, aids in photosynthesis, the conversion of sunlight into energy for plant growth. In animals, water is a key component of blood and other bodily fluids, facilitating the transport of nutrients, oxygen, and waste products throughout the body.

3. Thermoregulation: Water has excellent heat retention properties, regulating the Earth's temperature and maintaining climatic conditions that support life. Bodies of water act as heat sinks, absorbing and releasing heat slowly, which helps moderate the surrounding temperature and climate.

4. Chemical reactions: Water participates in various biochemical reactions that occur within living organisms. It acts as a solvent, dissolving and transporting essential nutrients and minerals, facilitating metabolic processes, and aiding in digestion and absorption. Water is a crucial component for the breakdown of complex molecules through hydrolysis reactions.

5. Photosynthesis: Water is a vital ingredient in the process of photosynthesis, which green plants and algae use to convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen. This process produces oxygen, which is essential for the survival of many organisms in the biosphere.

To understand the importance of water in the biosphere, one can study ecology, hydrology, and the cycles of water, such as the water cycle or hydrological cycle, which involve processes like evaporation, condensation, precipitation, and runoff. Additionally, learning about the structure and functions of living organisms, particularly in relation to water, can provide a deeper understanding of its role in the biosphere.