1) What is the H2O made of? a) by two atoms of hydrogen and one of oxygen b) By glaciers. c) By 1 atom of hydrogen. 2) How can we protect the H2O? (Water) a) By clean the ocean. b) By don’t throwing trash at all the seas. c) By throwing trash. 3) What is the air made of? a) By an atom and hydrogen. b) By hydrogen and gases. c) By a mixture of gases in slightly variable proportions, composed of 21% oxygen, 78% nitrogen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. 4) How can we save the air? a) By don’t tallying all the trees b) By don’t burn things that affects the atmosphere and the air. 5) What is fósil fuel made of? a) By water and gold. b) it is a mixture of organic compounds, mainly water-insoluble hydrocarbons. c) By silver and lava. 6) What is the earth made of? a) By the collision and fusion of smaller rock fragments, the so-called planetesimals. b) By gold and lava. c) By silver and water. 7) How long the earth is? a) 5.723 Km b) 7.000 Km c) 6.200 Km d) 6.372 Km e) 6.500 Km f) 6.371 km 8) How many years the earth have? a) 120 millions b) 500 millions c) 99 millions d) 100 millions e) 4.543 billion years f) 101 millions 9) How did water get to Earth? a) By the people putting it there. b) By the Dinosaurs. c) By the impact of comets and asteroids, or perhaps when volcanoes released it from within 10) What was the Earth called before? a) Planet 0 b) Funsei c) Pangea

NATURAL RESOURCES.

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