1) _______ is when the animal becomes inactive in the winter.  a) Consumption b) Eating c) Extinction d) Hibernation 2) Which organ purify our blood? a) Heart b) kidney c) Brain d) Liver 3) Plants are called: a) Consumers b) Producers c) Herbivores d) Decomposers. 4) Which planet is also known as "Red planet'? a) Jupiter b) Earth c) Mars d) Mercury 5) What is a chemical name of 'table salt'? a) Sodium chloride b) Magnesium chloride c) Hydrogen chloride d) Sodium bicarbonate 6) Which of these is a natural satellite? a) Sun b) Earth c) Star d) Moon 7) Identify this planet a) Neptune b) Saturn c) Jupiter d) Earth 8) Which of these is the second largest organ in the body? a) Liver b) Stomach c) Heart d) Brain

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