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What determines the thickness of a tree ring?
What determines the thickness of a tree ring?
- The type of tree the ring belongs to
- The weather during the year the ring grew (correct)
- The age of the tree
- The amount of sunlight the tree received
How do trees grow in relation to the weather?
How do trees grow in relation to the weather?
- Trees always grow at a consistent rate regardless of the weather
- They grow fast in warm and wet years and slower in cold and dry years (correct)
- They grow fast in cold and dry years and slower in warm and wet years
- The weather does not affect the growth rate of trees
What do thick tree rings indicate?
What do thick tree rings indicate?
- Disease or infestation in the tree
- The tree's age
- Warm and wet years (correct)
- Cold and dry years
What can the study of tree rings help determine?
What can the study of tree rings help determine?
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What supports 'Wonders with Charlie'?
What supports 'Wonders with Charlie'?
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What is the greenhouse effect?
What is the greenhouse effect?
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Which gas is a potent greenhouse gas and responsible for more than 25% of the effect?
Which gas is a potent greenhouse gas and responsible for more than 25% of the effect?
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True or False: Extra greenhouse gases in our atmosphere cause our planet to warm up.
True or False: Extra greenhouse gases in our atmosphere cause our planet to warm up.
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What is the principal greenhouse gas mentioned in the text?
What is the principal greenhouse gas mentioned in the text?
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How are man-made greenhouse gas emissions changing the Earth's atmosphere?
How are man-made greenhouse gas emissions changing the Earth's atmosphere?
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