Which of the following was one of the critical observations made by Darwin to explain the diversity of life on earth?
A) Animals that live where there is a shortage of resources have more adaptations.
B) Not all animals that are born will survive and reproduce.
C) There is more fossil evidence from plants than animals.
D) Structural changes that happen within an individual's lifespan can be passed down to their offspring.

Question

Quizplus · Accepted Answer

Darwin observed that there is a struggle for existence in every species due to overproduction of offspring, limited resources, and competition. Not all individuals born will survive and reproduce, leading to a natural selection of the fittest individuals. This process of natural selection can explain the diversity of life on earth. Option A is partially correct, but it is not a critical observation made by Darwin. Option C is incorrect as there is not more fossil evidence from plants than animals. Option D is also incorrect as structural changes that happen within an individual's lifespan cannot be passed down to their offspring.

Which of the Following Was One of the Critical Observations