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All living organisms eventually die because cells are progressively worn down by free radicals. Free radicals, or reactive oxygen species, are produced as side products from the biochemical reactions of cell metabolism. They are unstable molecules that will react with, and thereby damage, almost anything they come into contact with, including DNA, cell membranes, and proteins.
Through evolution, organisms have developed mechanims to cope with free radicals and dispel their harmful effects. However, the detrimental effects of free radicals on cells eventually overcomes these coping mechanisms as the organism ages, eventually resulting in death.
You may ask why evolution hasn't taken a step further and developed a never ending mechanism to deal with the free radical problem. The answer lies in the properties of evolution itself. Selective pressures on species only acts on individuals at the reproductive stage of life. Natural selection of an individual that lives longer over an individual that doesn't live as long wouldn't take place as both are able to pass on their genes.
What else can I help you with?
Are plants immortal, or do they eventually succumb to the passage of time like all living organisms?
Plants are not immortal and eventually succumb to the passage of time like all living organisms.
How nitrogen from living organisms return back to the air?
When living organisms die, decomposers break down their organic matter. During decomposition, nitrogen is released in the form of ammonia through the process of ammonification. This ammonia can then be converted into nitrites and nitrates through nitrification, which can eventually be denitrified back into nitrogen gas and released back into the atmosphere.
Are there living organisms without cells?
No, all living organisms are made up of cells. Cells are the basic unit of structure and function in living organisms.
What do you call a person who studies living organisms?
A person who studies living organisms is called a biologist.
What do biologists call living things?
Biologists typically refer to living things as organisms. Organisms are individual living entities that can carry out the basic functions required for life, such as metabolism, growth, and reproduction.
Do animals die?
Yes, all living organisms eventually die.
Can horses die?
Yes horses can die, all living things, or organisms die eventually.
What will happen if all living organisms lose the capacity for reproduction?
Then all species of organisms will eventually die out.
What will eat and die?
Organisms that are consumers in the food chain will eat to obtain nutrients for survival. Eventually, all living organisms will die as part of the natural life cycle.
What would happen if an organism's habitat disappeared?
The organisms living in the habitat will eventually perish(die).
What would boiling do to most living organisms?
It will most likely heat up to the extreme that eventually it will die.
Are plants immortal, or do they eventually succumb to the passage of time like all living organisms?
Plants are not immortal and eventually succumb to the passage of time like all living organisms.
Why do dalmatians have to die?
Because eventually every living being dies. Dalmatians, being living things, must eventually die.
Eventually how do all living things conclude their natural lifestyle?
All living things eventually die.
Can a living thing or organism survive without other living things?
Long term, no. All living things are a part of the biosphere and the great cycle this encompasses. Without the other organisms that form part of this cycle, a living thing would eventually die.
what is the process of living growing changing and dying?
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Do trees die?
Every 'living' thing will die eventually, that includes trees.
