1) acacia tree has ….. a) sharp spines b) butress roots c) hand shaped leaves 2) ….transfere energy from an object to another a) force b) work 3) which of the following animals use echolocation…… a) bats b) cats c) fire flies   4) the force that pulls everything towards the centre of earth… a) push force b) gravity force c) friction force 5) the action that needs only seconds to occur a) reaction time b) reflex action c) sensory receptors

grade 4

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