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239,757 public questions across 1,818 topics. Challenge yourself, or build the perfect quiz for game night.

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Easy National Parks

Which national park contains the iconic granite formation Half Dome?

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Easy National Parks

Which national park is home to the geyser Old Faithful?

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Hard Photosynthesis

What is the name of the model that illustrates the electron transport pathway from water to NADP+ in photosynthesis?

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Intermediate Photosynthesis

What is the name of the first stable compound formed in the Calvin cycle after CO2 fixation?

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Easy Photosynthesis

What gas is released by plants during the light-dependent reactions of photosynthesis?

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