mammals - animals that have hair or fur, produce milk to feed their babies, and usually give birth to live young, Industrial Revolution - A time in history when there were big changes: machines did a lot of work and factories became important., species - A group of living things that are similar and can have babies together., Charles Darwin - A scientist who came up with the idea of evolution by studying plants and animals and how they changed over time., evolution - the idea that living things change over time, usually to better fit where they live and what they need to survive,

WWOF Intro Level 1

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