How Do Organisms Adapt?
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The process of adaptation cannot be appreciated in a single organism, but only in a population. This is because adaptation is a RELATIVE condition, that is, relative with respect to a particular environment, and with respect to other individuals/species. \nNatural selection acts on the variation that arises naturally and randomly in each generation of individuals, so that those individuals best adapted to the extant environmental conditions leave more offspring which, presumably, will inherit these characteristics (assuming they're at least partly hereditary). Thus those "more adaptive" traits will spread in the population, and the population as a whole will be better adapted. \nHowever, as environmental conditions vary, some traits that were "better" may become "worse", and the population will evolve in a different direction.. or become extinct.\nThe changes in individuals that occur during their lifetime are _not_ adaptation, but a different phenomenon called ACCLIMATION.
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No.  As long as the world around us continues to change, humans will adapt and evolve to meet that change.
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no because bacteria and viruses are adapting too, and people can't come up with vaccines that quickly to combat change - bird flu is an example.  Humans will gradually evolve too, at least in their habits if not anything else, but this will be a very long process.\n\nLooking at the diversity of the Human Race, there is a large gene pool so they to have the capability to evolve.
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DNA changes over a long period of time by different factors such as the temperature. For example, During the ice age, the organisms have tough skin, heavy fur to keep their body temperature warm. Then the earth warmed up so the these organisms no longer need the heavy fur to keep warm. Their children's children began to evolve to have less fur in order to not die of heat. The organism changes when its surroundings/environment change. Evolution is needed for the organisms to adapt and survive to the current living conditions presented upon them.
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In biology, evolution is the change in the heritable traits of a population over successive generations, as determined by shifts in the allele frequencies of genes. Over time, this process can result in speciation, the development of new species from existing ones.
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Evolution of reproduction. Nature finds its way.
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Characteristics of living Organisms\n\n1.Organization - Living things are composed of one or more cells, which are the basic units of life. \n\n2.Metabolic Processes - Metabolism produces energy by converting nonliving material into cellular components (synthesis) and decomposing organic matter (catalysis). Living things require energy to maintain internal organization (homeostasis) and to produce the other phenomena associated with life. \n\n3.Growth - Growth results from a higher rate of synthesis than catalysis. A growing organism increases in size in all of its parts, rather than simply accumulating matter. \n\n4.Adaptation - Adaptation is the accommodation of a living organism to its environment. It is fundamental to the process of evolution and is determined by the organism's heredity as well as the composition of matabolized substances, and external factors present. \n\n5.Responds to stimuli - A response can take many forms, from the contraction of a unicellular organism when touched to complex reactions involving all the senses of higher animals. A response is often expressed by motion: the leaves of a plant turning toward the sun or an animal chasing its prey. \n\n6.Reproducing - The division of one cell to form two new cells is reproduction. Usually the term is applied to the production of a new individual (either asexually, from a single parent organism, or sexually, from two differing parent organisms), although strictly speaking it also describes the production of new cells in the process of growth.
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Do your own homework!\n\nBut nematodes are in a funny spot, since they may or may not have changed much in a long, long time.  Of course this probably just suggests that they are about perfectly adapted to the environments they choose to live in, and any mutation that individuals may have undergone offered no significant advantage.
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The 'modern' human experiment could be seen as an answer to your question.  We now, for our 'comfort' do things which are certainly to be considered 'adaptive selection of species'.  The way this results in 'natural selection of a population' can be felt and seen and even quantified, if one is sentient and humble enough.  Glad to help!
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that's due to climate,food....and various reasons....everybody has adapted themselves with the part of world they live in......u must have heared about survival of the fittest(EVOLUTION).
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evolution is the constant change in physiology a life form undergoes to remain adapted to its environment. Its hard not to believe in evolution. What is hard to belive is that God created all species in their current state and doesnt change them. I believe thats just the bibles answer because it was written before evolution was known.
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They reproduce by giving birth.\nThey have to reproduce via male and female combination.\nThey can adapt their body temperature depending on environmental conditions.\nThey all have hair.
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well, there are two ways that I remember from bio. One is that they learn from other animals/ assimilate other organisms into their own cell structure (this is simple lifeforms)for example, many scientists theorized that the mitochondria comes were actually assimilated organisms.\n\nAnother way is the whole "survival of the fittest" basically, certain members of a species that are able to survive/thrive in an environment would oust the other members, while if the environment changes so that it favors another group, then this group would die out, so that only the species that work best in the environment are left. I think this is a theory that Darwin came up with.
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Remember that evolution usually takes the path of least resistance.  C4 metabolisms are an advance over C3 by compartmentalization.  This means creating specialized tissues.  Specialized tissues are metabolically expensive to form and maintain.  If a plant can get by with a C3 metabolism for all of its shortcomings and in-efficiencies it will do so.  Also C4 metabolism is adapted for periodic high intensity heat.  A great majority of the world does not experience that type of environment so that type of adaptation is not necessary.  When you look at it that way you could also ask why more plants don't have a CAM metabolism.
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How did evolution change over time? You mean...how did evolution evolve?  Heh.  The evolution of evolution.  That's funny.
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Okay, to understand evolutionary pressures, you have to understand what plants were lacking that could give them an advantage over the others. This advantage was mobility! Plants are relatively immobile, or stationary, and lack ways to "move" that other organisms do. The results of being immobile were vast areas of plants with little to no genetic diversity.\n\nTo ensure mobility, they produced flowers, which did a couple of things. A big one was co-evolution with insects: the plants provided food for the insects, the insects in turn pollenated them. Ensuring their pollen traveled further than the wind could carry it, and more precisely to their target.\nSecondly, their flowers, once pollenated, turned into fruit. The fruit was then dispersed a number of ways: by wind, water, carried off and eaten, and even by friction of animals walking. Fruit ensured the seeds inside them were carried away from the parent plant, ensuring a larger area to populate by one parent plant.\n\nHope this helps.
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One answer might be that they have gradually changed, or evolved,over a very long time to suit the places they live in and the food that is available to them.\n                 In the 19th centurya scientist named CHARLES DARWIN (1802-1882) put forward a theory, which he called 'natural selection'. to explain how these changes might happen.\n              According to darwon, individuals animals and plants sometimes have qualities that help them to survive.For example,in agreen forest, a green bug would pribably survive longer than a brown bug,because its appearence would help it to aviod being seen amd eaten.\n       The individuals that survive the longest are likely to have more babies,and will pass on their useful qualities to them.Over a very long time,each species will very gradually develop all the most useful qualities for surviving in its own habitat.