Complete the sentences with the appropriate words.

1. How many volcanoes ... in 2020?

2. There are many varieties of protective ... available for specific hazards.

3. The ... of the mountain are very steep.

4. Mike went down the icy ... at 75 km/h.

5. Eight teams of six people each ... in the tournament.

6. Workers spread salt on the road to ... the ice.

7. The Chilko River offers beautiful scenery and challenging ... to those who seek adventure.

8. Competitors tried to ... their canoe, but it tipped over and they fell into the water.