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Really short answer:
Chemistry.
Short answer:
Because life on our planet is based on water (H2O).
Long answer:
Oxygen is not a necessity for life; there are whole classes of microorganisms that are anaerobic.
Some of these organisms developed the ability to photosynthesize light and split water into oxygen and hydrogen (which combines with carbon into carbohydrates). In fact nearly all of the oxygen in the air we now breathe was produced by microorganisms more than 3.5 billion years ago who effectively polluted the environment for other organisms for which oxygen was poisonous.
However, some organisms not only survived the oxygen bloom, but subsequently developed the ability to chemically use this atmospheric oxygen. Some of these organisms evolved into multicellular organisms that eventually evolved into plants and animals dependent upon atmospheric oxygen.
Animals in particular are dependent on oxygen for a metabolic process called the Krebs Cycle, and I suspect this is what you mean.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoOxygen is essential for cells to perform their functions. Without oxygen, cells begin dying in a few minutes. Oxygen deprivation can cause human death in about four minutes.
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Why is the continual exchange of gases in both external and internal respiration essential for survival?
oxygen fuels the brain.....
An element that is essential for the survival of an organism but only in minute quantities?
trace elements
What is essential for aerobic respiration?
Oxygen is essential for aerobic respiration, oxygen helps blood flow which helps with our circulation. Anaerobic respiration does not require oxygen.
Plants in general require a total of how many essential elements for their growth and survival?
16
What is a basic requirement for survival?
Oxygen,gravity,tempeture,sleep,and shelter
Why is the continual exchange of gases in both external and internal respiration essential for survival?
oxygen fuels the brain.....
What is the colorlessodorless tasteless gas that we breathe in?
Oxygen is the gas we breathe. It is colorless, odorless, and tasteless. It is essential to humans' survival.
Which atmosphere gas is essential for human survival?
Although many would suggest oxygen, and this answer is true for all larger animals, a review of all living organisms suggests some that live in the absence of oxygen:anaerobes some of which substitute sulfur for oxygen in their life processesfacultative organisms
What is the thing people need most?
There are many things that are essential for survival. These include water, oxygen, food, warmth, etc.
Why is O2 essential to life?
Another critical gas is oxygen gas (O2). Much of life on this planet is aerobic, meaning oxygen is required for survival. Oxygen serves as a key constituent in the process that releases the energy stored in food.Oxygen is not essential to all life. In fact there are some organisms that die in the presence of oxygen. There was once a time when there was no oxygen in our atmosphere and only anaerobic organisms lived. Water is essential to all known life but not oxygen.
Why is oxygen essential for survival of humans?
Because our red blood cells take in the oxygen we breathe in and distribute it to the other parts of our body. It also gives us a large part of our nutrition and energy.
How does seasonal turnover in lakes affect oxygen level available to the aquatic organisms?
It affects the oxygen level because it is essential for the survival and growth of organisms ata ll levels within its ecosystem.
The function that is not needed for survival of the organism but is essential for the survival of the species is?
Reproduction
Is killing the pig essential to the survival of the group?
No, killing the pig is not essential to the survival of the group. There are other ways to obtain food and resources for survival without harming animals.
Is determination essential to survival?
yes
Organic compounds essential for the survival of organisms?
oxygen, carbon, water (H20), salt (Nacl)I'm pretty sure anything that there is a daily value for on a vitamin bottle is essential to human life, other animals are different.
How are volcanoes essential to earths survival?
However, volcanoes are essential to earths survival they act like a safety valve for the planet (it releases pressure)
