adaptation
A change or the process of change by which an organism or species becomes better suited to its environment. or A movie, television drama, or stage play that has been adapted from a written work, typically a novel.
Evolution and natural selection ensures that all viable organisms are suited to their environment.
The short, simple, answer, is survival. The environment is one of the things that drive evolution. When a species is suited to the environment in which it lives it remains relatively stable in it's particular form and exhibits little change.If the environment becomes unstable or is radically changed in some way, such as ever more cooling temperatures, or a depletion in some natural resource, this drives a species to adapt to the new environment through change/evolution. Depending on the speed with which an environment can change, or the severity of the change in the environment, the pace of the evolution can be relatively slow or relatively fast, but in geologic terms, either fast or slow evolutionarily speaking, the change is still slow in human terms. Evolution always takes usually several millennia, and on rare occasions, based on the scope of the environmental changes, it can happen in as little as several centuries, but this is the exception and not the rule.
An individual organism does not lose characteristics. A species can, over time, and this is called natural selection, which thus results in evolution.
natural selection
Adaptation (I'm studying the same thing ;)
Adaptation is when a change in an organisms that makes it suited to a particular environment. It responds to their environment
In bio, adaptation usually refers to an evolutionary change an organism has made to better suit its environment. This change is a process and usually takes thousands of years. Evolutionary adaptation is not to be confused with acclimation, which is when an organism simply gets used to its environment during its lifetime and makes no evolutionary changes.
A change or the process of change by which an organism or species becomes better suited to its environment. or A movie, television drama, or stage play that has been adapted from a written work, typically a novel.
adaptations is the change in a species to help it to become better suited to its environment. these include structural, physiological and behavioral adaptations. limpets have adapted to survive on rocks and eat bird poos.
it suggested that over time the species had evolved and adapted to the climate they were in.
Those that are ill suited to their environment do not survive to pass on their genetic material. Those that are do. A random mutation will not survive unless it endows its possessor with some kind of advantage.
Sometimes this is called natural selection.
Natural selection causes those organisms that are better suited to survive and reproduce to pass on their genes to future generations, causing their children to be better suited to their environment as well. Over time, these traits that have been selected by natural selection will result in an overall change in a species.
a clean environment is best suited for viviparous animals
Evolution and natural selection ensures that all viable organisms are suited to their environment.
Natural selection is the same for all organisms. There are variations in all organisms. You don't look exactly like your father or mother. Some variations are more suited to the environment they live in. Those that are more suited, survive longer and are more likely to produce more offspring. Those that are not suited wont. This means each species will change over time to become more and more suited favouring those more suited in the first place. This is the same for plants and animals. New species in plants usually begin with what is called a kline. If there are a group of plants growing up a mountain, those at the bottom will be more suited to the characteristics of where they live like warmer weather. Those at the top are more suited to their different environment. Plants next to each other will interbreed but often the same species at each end of the kline won't. If the middle of the kline disappears, perhaps by fire, we now have two new species.