1. Greenhouse effect will lead to   Greater rainfall   Decrease in atmospheric pressure   An increase in Oxygen Production   An increase in the temperature   Hint Half-n-half Clue   2. Coal is formed from   Lava   Rocks   Organic Matter   Soil   Half-n-half Clue   3. Gasoline is a non-renewable source of energy.   True   False   4. Which of the following is a main component of common glass?   Sand   Water   Powdered Mica   Marble   Half-n-half Clue   5. The length of the days and nights is equal at the   South Pole   North Pole   Tropic of Capricorn   Equator   Half-n-half Clue   6. Granite and quartz are igneous rocks.   True   False   7. What are metal bearing rocks called?   Bitumen   Metalloids   Slag   Ores   Half-n-half Clue