What are the similarities between a food web and a food chain? (i need three)

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True or false: the revolution of the earth creates day and night as it rotates around the sun

Which lists the organs in the correct order as food passes from the mouth to anus?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?