Key words: date, dawn, sundial, sunrise, timepiece, hour, to measure the time, environment, ecological problems, biosphere, marine life, rain forests, all continents, nuclear power stations, cliff, forest, hill, lake, lagoon, rock, mountain, beach, wave, desert, island, animal, wild.

Exercise 1 Complete each gap with one word at a time. Translate into Ukrainian.
1 acid ________
2 air ________
3 ________ change
4 car exhaust ________
5 the ________ effect
6 the ozone ________
7 renewable ________
8 unleaded ________
9 ________ turbine
10 nuclear ________plant​