1) Which is the planet closest to sun? a) Mars b) Mercury c) Venus d) Neptune e) Jupiter f) Earth 2) According to scientific research, how many years ago sun and planets were created?  a) 10 million years b) 100 billion years c) 2.3 billion years d) 4.5 billion years e) 400 million years f) none of the above 3) Which is the only planet that has life?  a) Mercury b) Venus c) Earth d) Mars e) Jupiter f) Saturn 4) What is the term used for the first unicellular organisms that appeared on Earth? a) Bacteria b) Algae  c) Germs d) Protozoa e) Fungi f) None of the above 5) What tool do we need to see unicellular animals? a) Telescope b) Specs c) Magnifying glass d) Binoculars e) Microscope  f) None of the above 6) What significant development occurred after the formation of protozoa? a) Formation of the atmosphere b) Creation of land masses c) Development of multicellular organisms d) Appearance of mammals e) Space was formed f) None of the above

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