Respuesta :

kaisersriprad

Answer:

There are 4 condition:

1. Heredity

2. Reproduction

3,. Fitness or organism

4. Variation in individual characters among population

komarucore

Answer:

Variation and inheritance, heredity, and individual characteristics.

Explanation:

These factors are necessary for natural selection to occur, because otherwise if you don't have them it won't be able to happen.