<span>A change that increases an organism's chances of survival is called an adaptation. </span><span>An adaption is any inherited characteristics that increase an organisms chance of survival. It is the way organisms </span><span><span>response to the imposed conditions. The characteristics can be structural, behavioral or physiological. </span>Adaptations may include changes in habitat, genetic changes, mimicry, internal adaptations...</span>
B. Is characterized by four different zones.
Microorganisms such as bacteria can be removed by disinfection. Certauns substances called biocides are addes to water to make it pure. Purification can also be done by UV-light .
