In natural selection, Darwin proposed that evolution occurred because of the following conditions except

Analyze the question: We are asked for the one condition that was NOT part of Darwin's theory of natural selection (the "except" option).

Concept: Darwin's theory of natural selection Darwin's main ideas were:

1. Overproduction: Organisms produce more offspring than can survive.
2. Limited resources: Food, space and other needs are scarce, not abundant.
3. Struggle for existence: Because resources are limited, there is fierce competition among offspring.
4. Variation: Individuals differ, and some variations give an advantage.
5. Survival of the fittest: Nature selects the best adapted to survive and reproduce, while the weaker ones are eliminated.
6. Inheritance: Survivors pass the useful traits to their offspring, so the population changes over generations.

Checking each option:

• A. Nature selects those that will survive to reproduce their kind. This is part of Darwin's theory (natural selection itself).
• B. Fierce competition among the offspring. This is part of the theory (struggle for existence).
• C. The weaker offspring are eliminated. This is part of the theory (survival of the fittest).
• D. Food and other needs are abundant. This contradicts the theory. If resources were plentiful, there would be no competition and no selection pressure.

Answer: Option D is the exception, so it is correct.

Exam tip: In "except" questions, find the statement that contradicts the theory. For Darwin, remember "scarcity leads to struggle, struggle leads to selection." Any option that says resources are plentiful or that there is no competition is almost always the odd one out.