The following observations refer to evolution: I. Inherited variations which are 'favoured' in a particular environment are passed on. II. There is a struggle for existence. III. In time, 'favoured' inherited variations may accumulate causing gradual changes in the organism. IV. Although populations tend to overproduce, they remain more or less constant in number from generation to generation.In what sequence should the statements be placed to support Darwin's theory of evolution?

Explanation

• IV. Overproduction and population stability: Organisms produce more offspring than can survive, but population sizes generally remain relatively constant.
• II. Struggle for existence: Limited resources create competition among organisms for food, space, and survival.
• I. Natural selection: Individuals with favourable inherited variations are more likely to survive and reproduce.
• III. Accumulation of variations: Over generations, favourable inherited variations accumulate, causing gradual evolutionary changes.
• Remember: Overproduction → Struggle for existence → Natural selection → Evolutionary change.

Last verified on 31-10-2026

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