II. Complete the sentences. sea Plastic; a solar thermal system; planting trees; the greenhouse effect; levels; the ice; the earth's surface; reduce, reuse, recycle.

1) An increase in the average temperature of is the global warming. 2) This phenomenon is also called 3) One danger of global warming is that the rising temperatures will melt much of at the earth's poles. 4) Melting of iceberg will raise around the world and flood the coastal cities. 5) Use cloth or jute bags instead of bags. 6) Encourage your parents to install in your home. 7) Join family members, neighbours in in your yard, along roadways, in parks. 8) The solution to the problem of global warming and the greenhouse effect lies in the three “R's”..

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