Quiz

Question bank: Unit 3 — Variation of Traits in Living Organisms

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In natural selection, the selecting agent is the:

farmer

environment

scientist

teacher

After the Industrial Revolution, dark moths became more common because:

pollution turned light moths dark

dark moths were less visible to predators on dark tree trunks

the moths changed colour on purpose

lichens grew faster

Natural selection acts on:

traits that already exist in the population

traits that the environment creates in individuals

acquired habits only

traits that never pass to offspring