Darwin’s Four Forces

40 questions on this block. Tap an answer and it moves on by itself — correct answers advance immediately, misses hold a few seconds so you can read why.

Four forces, then the result Too many offspring, all a little different, not enough to go around — and the ones that fit leave the most offspring. The environment picks; it never creates.

Warm-up · not scored

Click the buttons and watch what changes.

Beetles that blend in survive more often and have more offspring. Individuals do not change; the population changes over generations.

Warm-up 2 · Darwin’s four forces in a scenario · not scored

Part 1Overproduction

Part 2Genetic variation

Part 3Competition

Part 4Unequal reproductive success

Part 5What natural selection is — and is not

Part 6Applying the models

Darwin’s Four Forces

Warm-up · not scored

Review Complete

Worth another look