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Liquid water because the majority of organisms require water even if in smaller amounts whereas there are quiet a range of organisms that live their whole lives in an anaerobis environment meaning in the absence of air.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoclearly oxygen, how else would you breathe? you can last 3 minutes with out oxygen, 3 days without water and 3 weeks without food...
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What is the most important role of hydrogen bonding between water molecules?
The molecules of water are held together by hydrogen bonding between molecules.These are electrostatic bonds (attraction forces between opposite charges) that hydrogen makes with the oxygen of neighbouring molecules. Hydrogen, when bonded to oxygen to form water molecules, is slightly positive and the oxygen in the water molecule is slightly negative. Hydrogen gets attracted to the neighbouring slightly negative oxygen atoms.This is great for life on Earth because small molecules the size of water tend to be gases but water is a liquid. It is a liquid due to the hydrogen bonding between molecules.
What are the 5 most important elements in life?
Nourishment, water, producing and excreting waste, suitable environment and oxygen
Does boiling water have oxygen?
There are two different ways to ask this question, each dealing with two different ways that water can "have" oxygen in it. It is important to understand the question being asked because each interpretation has a different answer. 1. Does boiling water contain dissolved oxygen? 2. Does water contain oxygen? The answers: 1. No, boiling water does not contain dissolved oxygen. The hotter a substance is, the more energy the molecules have. There are gases such as carbon dioxide (CO2) and oxygen (O2) dissolved in cold water. As the temperature increases, these gases gain energy which lets them escape from the liquid water in which they are trapped. To relate this phenomenon to something encountered in daily life, a cold can of Coca-Cola has more fizz than a warm one. The fizz is the result of gases escaping from the cold liquid. The warmer Coca-Cola does not contain as much dissolved gas, so it is "flat." 2. Yes, water contains oxygen. The molecular formula for water is H2O, meaning that there are two covalently bonded hydrogens to each oxygen. Change this formula, and you don't have something that can be called "water" anymore. A common misconception is that the process of boiling creates oxygen and hydrogen gases (O2 and H2), which is simply not true. The act of boiling water imparts energy to the liquid water molecules. This energy is enough to break the hydrogen bonds that hold the water molecules together in liquid form. Once these bonds are broken, the water molecules vaporize and go from being H2O (liquid) to H2O (gas). Therefore, the vapor produced as water boils is water vapor. Before the boiling point is reached, you can see the dissolved gases initially present in the cold water (for example, CO2 and O2) forming bubbles and rising to the top. Remember, these were initially present-- they are not a result of the covalent O-H bonds in water being broken as part of the boiling process. The covalent O-H bonds are not broken during boiling, only water vapor is formed.
When the atmosphere did not have oxygen where did life exist?
Before there was oxygen life tended to exist in water as a form of algae which breathed in carbon dioxide and exhaled oxygen like plants. bacteria also existed at underwater thermal vents like the ones they have discovered at the ocean floor.
What evidence supports that idea that life could have evolved on europa?
They think that life might exist on Europa because they have found evidence of liquid water on Europa. Hope this helps. :) <3
Why is water the only inorganic liquid that exists under normal conditions at temperatures suitable for life?
Because it is the only Liquid That Gives Life, Destroys Life. So mainly If we Didn't Have Water Then There will be No Plants, Therefore No Oxygen, which results in No Life On Earth.
Why water is important to man?
Water is fundamental to all living organisms. Water and Oxygen form the basis of life.
Why doesn't other planets have oxygen?
because you need biological life. You also need liquid water. Mars does have oxygen @ very low levels. Other planets do have oxygen.
What are the characteristics of your solar system that are required for the existence of life?
Oxygen for some types of life. Liquid water for all life as we know it. Temperatures that are not too extreme.
What 3 things are needed for life?
Energy Liquid Water Oxygen,Nitrogen,Carbon dioxide,Hydrogen and other gases.
What are the basc substances important to life?
If you mean to sustain life, the basics are carbon and water (hydrogen and oxygen), as far as I know.
Why do scientists believe life may have existed on Mars?
We have found minerals and other formations on Mars that show it once had bodies of liquid water. As we currently understand it, liquid water is the most important ingredient for life.
Why oxygen is important to people and animals?
Oxygen is important on earth so that all the people and animal's can breath. It is also important to all of our vegetation, crops, and and all of our water supplies. Without oxygen life as we know it would cease.
What factors makes life on earth possible a the earths orbit is the correct distance from the sun b the amount of oxygen present in the atmosphere is not too little or too much?
The presence of water is important too! Our distance from the Sun means we have water in liquid form (not solid or gas) which is necessary for life.
Why would the discovery of liquid water on another planet be inportant?
Personally, I believe that the discovery of liquid water is so important is because all forms of life need water to survive. :-), Ri
Liquid of life term is for what?
" Liquid of life " is a term made for water.
What are the planetary characterictics in an extrasolar planet that might have the potential to harbor life similar to that found on earth?
Oxygen-rich atmosphere and liquid water.
