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Firstly and simply think about what a river looks like - bendy or straight
Why do you think it is bendy?Further down a river you go, the more water there is, which means the river has more energy.Mor...

Think about the extreme conditions found in desertsHot temperaturesLack of water for long periods of timeVulnerable to animals
Think about the characteristics of these plants:Small leavesSpikesLarge ...

I would tell them to start multiplying out the first brackets (x+2)(x+3)! I would do this by timesing x by everything in the second bracket and then 2 by everything in the second brakcet! Giving the answe...

Think about what carbon is used for, and also what plants are required for.
Plants take in carbon dioxide from their surroundings, which enables them to undergo photosynthesis. At night, plants respi...

They travel at the same speed through air.They travel at the same speed through a vacuum.They are both transverse waves.
Other answers that are accepted: they can be reflected, refracted, diffracted,...