Use the suggestions to make conditional sentences type 1:
1. sea/ get warmer
=> If the sea gets warmer, the ice in the North and South Poles will melt.
2. ice/ North and South Poles/ melt
=> If the ice in the North and South Poles melt, the sea level will rise.
3. sea level/ rise
=> If the sea level rises, there will be floods in many parts of the world.
4. there/ floods/ many parts/ world
=> If there are floods in many parts of the world, many people will lose homes and lands.
5. many people/ lose homes and lands
=> If many people lose homes and lands, homelessness will be a big problem.