Traits that increase an organism's chance of survival, also determine an organism's niche.

Adaptation, inherited traits that increase an organism's chance of survival, also determine an organism's niche.

Adaptations are features or behaviors exhibited by organisms and are usually common in a population.  Adaptations evolve  by natural selection and they fit organisms to their environment. Adaptations have functional roles and may be physiological, structural or behavioral. The long necks of giraffes for feeding in the tops of trees, and the long canine teeth of carnivores are examples of adaptation.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !