Answer:Darwin believed that individuals that are poorly adapted to their environment are less likely to survive and reproduce. This means that their genes are less likely to be passed to the next generation. Given enough time, a species will gradually evolve.
-individuals in a species show a wide range of variation this variation is because of differences in their genes
-individuals with characteristics most suited to the environment are more likely to survive and reproduce. The genes that allow these individuals to be successful are passed to their offspring.
In genetic terms, evolution is any change in the allele frequency of a population.
Step-by-step explanation: