Water is important for all living things.explain?
Answers
Living organisms need water to survive. Some organisms, such as fish, can only breathe in water. Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.
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Answer:Living organisms need water to survive. Many scientists even believe that if any extra-terrestrial exists, water must be present in their environments. All oxygen-dependent organisms need water to aid in the respiration process. Some organisms, such as fish, can only breathe in water. Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.
Explanation:Water is an essential source of energy. Almost 70% of earth surface is covered with water and about 60% of our body composed of water. Water present almost everywhere and it's good thing too, because without water we can't even predict our life.
All organisms on Earth that do not required oxygen to live. They metabolize hydrogen or methane or a number of other compounds. Plants breathe CO2 (carbon dioxide) and get much of their energy from the Sun through photosynthesis. There is life at the bottom of the oceans which have never seen the sun and get all of their energy from hydrothermal vents on the seafloor.
But all life on Earth shares one thing in common: we all need water to live. Without exception.
Good thing it’s so abundant..!
Due to wide range of temperature on earth mostly water is found in liquid form. A liquid is a much better transport medium for nutrients and other life-necessary compounds than a solid.
Water is also a universal solvent because so many different kinds of substances can be dissolved in water. All life needs to take in substances to generate energy and flush out waste products and toxins. Because of water’s knack for dissolving all kinds of substances, it makes an ideal medium for both tasks.
Water is so good at being a solvent because of its polarity.
This means the water molecule has two poles of opposite electric charge. Since each water molecule is made up of two hydrogen atoms and one oxygen (H2+O -> H2O), the hydrogen atoms contribute a positive charge (H+) while the oxygen contributes a negative charge (O-), giving the molecule both positive and negative poles. This makes the water molecule not only strongly attractive to other water molecules, it will attract other polar molecules as well. This why so many substances can dissolve in water. The molecules are attracted to one another.
Surface tension is the tendency of water molecules to adhere to one another in such way as to make its surface act as a membrane. You see surface tension at work whenever you see an insect walking on water or whenever water beads up on a surface.
This is important to life because it means water is sticky. It tends to clump together. This allows it to be sucked up as continuous stream through the roots of plants or circulated through our blood vessels against the force of gravity.
Water is the only natural substance that can be a liquid, solid, and a gas within the tight temperatures ranges of Earth. That means we get the benefits of all three phases of water.
Because water can evaporate here on Earth, it can be distributed all over the planet. Sunlight will cause water to turn into its gaseous form. Because it is less dense, the water vapor will float up into the atmosphere. But because of it’s inherent stickiness, the vapor will tend to clump up around dust particles in the air and become clouds. Water basically hitches a ride on these particles as they are blown across the planet — to be deposited far and wide in the form of rain.