1) Coral reefs are also known as? a) maiden of the sea b) rainforest of the sea c) sirens of the sea d) mountains of the sea 2) A forest of all trees is called? a) tropical rainforest b) avatar c) dessert d) swamps 3) Au is symbol of what element? a) Mercury b) Gold c) Silver d) Seaborgium e) Titanium 4) Pb is asymbol of what element? a) Lead b) Plumber c) Palladium d) Barium 5) What is the biggest star? a) Cassiopea b) Orion c) Moon d) Sun

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