Circle the correct word. 1 Ice is solid / liquid. 2 How does the situation effect / affect you? 3 It's all very predictable / unpredictable: you never know what's going to happen. 4 My brother is studying the effect of the problem on the environment / the pollution. s Global warming is caused by people / human activity. 6 There was snow in the mountains, but now it's spreading / melting. 7 If there is a gradual change in something, it happens slowly / quickly. a Water is a liquid / gas. 9 The rainforest is gradually disappearing / melting. 10 There are harmful gases in the atmosphere / effect.