Respuesta :
- it affects populations
- it occurs when there is genetic variation
- it selects organisms with certain traits to survive
- it occurs when there is genetic variation
- it selects organisms with certain traits to survive
The gradual change in an organism over a period of time is called evolution. These changes help an organism to survive in its surrounding.
The factors which help to enhance the evolution are:-
- Reproduction
- Crossing over
- Recombination
If an organism had to survive in nature it must evolve in its surrounding.
Hence, according to the question, the correct option is as follows:-
- It affects populations.
- It occurs when there is genetic variation
These are the characteristics of natural selection.
For more information, refer to the link:-
https://brainly.com/question/9830102