PASS YOUR MOUSE OVER THE QUESTION MARKS (???) FOR THE ANSWER TO EACH QUESTION! ANSWER WINDOW WILL OPEN. JUST CLICK OK TO MAKE THE ANSWER GO AWAY AND GO ON TO THE NEXT QUESTION!

1.The biggest energy source on the surface of the earth is?

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2. The only place in Europe where flamingoes nest is?

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3. The acid found in soil is?

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4. Bacteria break down the dead and decaying plant and animal matter into?

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5. 5. Burning of fossil fuels releases?

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6. The place referred to as the Valley of Death is?

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7. The Valley of Flowers is located at?

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8. Sao Raimundo is Brazil is also known as?

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9. Tbe bird Bodo became extinct because of its?

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10.The element found abundant in the crust of the earth is?

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11.99 percent of the crust of earth is composed of?

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12.The crust of the earth is called?

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13.The earliest living forms on earth were?

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14.The type of soil found in the desert is?

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15.  15.Regolith means?

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16.Acid rain was discovered by?

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17. The simplest and least polluting way of deriving energy is?

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18.Junk of appliances and vehicles is known as?

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19.Oceans are ecologically divided into.......regions.

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20.Uranium miners more frequently suffer from?

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