The answer is the third statement- Tundra, wetland, rainforest, desert
Answer:
The correct answer is letter "B": heritable variation among individuals in the population.
Explanation:
According to the natural selection theory, greatly spread after Charles Darwin's research, four (4) conditions are needed for it to take place: <em>reproductions, heredity, variation in organisms, </em>and <em>variation among individuals in the population</em>. Only in the case the four conditions are met, natural selection occurs.