why do life addapts itself ?

Question

all forms of life addapted themselves to environment.So why life doest it .

Answer 1

Read up on Darwin's Natural Selection. Life adapts so that it can survive.

Answer 2

Warning. If you don't believe in evolution, put you head back in the sand and don't read this.

If life can't adapt to changing conditions it dies. Existing species and individuals develop new habits to survive in new conditions. If they can't, they die. Penguins are doomed because they depend on a very specific set of conditions that are changing. Polar bears may die out too if they can't break their dependence on pack ice.

Many creatures adapt to a shrinking environment by learning to feed off of man's left overs. Bears raid trash cans, wolves go after domesticated animals, and ravens pick at McDonald's bags thrown from cars.

Adaptation from generation to generation is even more amazing. My favorite example is a particular African fruit fly. In Africa they were very intolerant to cold temperatures. Even a light frost would wipe them out. One day a boat was loaded full of produce in an African port. A week later it unloaded in New York. Along with the cargo a few hundred fruit flies had hitched a ride.

Because of the cold many of these little guys died flat out. Many of the rest didn't reproduce because they were miserable. You can just picture the little colony alone in the big city. Huddled in the corner of a warehouse, cutoff from their families. Because the ones who bred were the one best suited for the cold the kids tended to have this same advantage.

This is all brought on by a certain randomness from generation to generation. If a situation occurred that humans with blond hair were less likely to have kids, the trait would slowly disappear. If all tall men were snipped before they could father a child we would end up a shorter species.

Living in North American, our friends the fruit flies definitely found a resistance to the cold weather was a positive feature. The thing about flies is they go through several breeding cycles in a year. As they became tougher they spread out. Eventually they found homes throughout the Northern U.S. Now, some pockets are actually considered a new species.

Answer 3

Random chance.

Say you've got 400 trees, right?
Trees 1-399 die when it hits 20 degrees. Tree 400 has a random mutation that makes it live to temperatures of -5.

A few hundred years pass, and tree #400 has passed its genes on to a few hundred other trees-its offspring.

Suddenly, there is a winter where it gets down to -3. The only trees that live are the offspring of tree #400.

We say that these trees "adapted" but the truth is these trees, for the most part, just got lucky with random chance. They are adapted, but it isn't something they went out and did.

Answer 4

Life does not adapt itself and single organisms do not adapt to anything. Organisms, even within the same species, are different and the most fitted to the external circunstances (environments) survive and reproduce themselves. The others die.