Final answer:
Organisms survive in their environment by having adaptions such as variation of traits, competition for resources, and producing more offspring than can survive. These adaptations allow individuals to have advantages in obtaining food, building homes, attracting mates, and ultimately reproducing.
Step-by-step explanation:
Organisms survive in their environment through combinations of traits that provide them with advantages. These traits are known as adaptations, which allow organisms to better obtain food, build homes, attract mates, and ultimately reproduce. Adaptations can include variation of traits among individuals, competition for limited resources, and producing more offspring than can survive.
Natural selection occurs when individuals with advantageous traits are more likely to survive and pass on their traits to the next generation. This leads to a change in the range of genetic variation over time, increasing the overall fitness of the population to its environment.