Choose between "tree top" and  "forest floor". Question: A possum can run very quickly along the forest floor, but not so fast along the tree tops. Which surface puts less resistance on the possum's paws? (A) tree top (B) forest floor
forest floor

Choose between "pharaoh" and  "slave". Question: The pharaoh lounged lazily on his spacious throne while a slave girl walked back and forth to the table to bring him grapes.  Who will sweat less? (A) the pharaoh (B) the slave girl
pharaoh

Choose between "glass mirror" and  "stone slab". Question: A glass mirror is smoother than a stone slab. This means that running a razor blade over the _____ will create more heat (A) glass mirror or the (B) stone slab
stone slab