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When did the first plants appear on land?
450 Million years ago
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What gives plant leaves their green color?
The chemical chlorophyll gives plants their green color.
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Name three things that help birds to fly.
Feathers, strong muscles and light bones help birds to fly.
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Which word means "hard and firm"?
solid
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How long ago did Homo Sapiens evolve?
Homo Sapiens evolved about 150 000 years ago.
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How long have sharks lived in the oceans?
Sharks have lived in the oceans for 450 million years.
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What do we call the slow process of change whereby living things change to better suit the environment they live in?
It's called evolution.
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What happened in the seas 3.5 billion years ago?
Life began in the seas 3.5 million years ago.
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How long ago did the first continents take shape?
The first continents took shape about 1.8 billion years ago.
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What were the earliest plants that appeared on land?
Mosses were the earliest plants to appear on land.
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What do plants use photosynthesis to make?
They use photosynthesis to make food.
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Which word means "tiny living things"?
Bacteria
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What is this word "ænˌsɛstər"
ancestor
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How old is the oldest tree?
The oldest tree is 9 550 years old.
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How tall is the tallest tree?
The tallest tree is 110m tall.
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What is hibernation?
Hibernation is when an animal sleeps for a long time in the winter.
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Why did the dodo go extinct?
People ate them because they weren't afraid of people.
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Which animals do we share ancestors with?
We share ancestors with gorillas and chimpanzees.
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How many species of invertebrates do we already know?
We know about 1.5 million species of invertebrates.
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