Will somebody answer these?

Question

1. Four ways climate affects human activities are _____,_____,_____, and ______.
2.The major problem with water is______.
3. Only ___ percent of earth's water can be readily used by humans.
4. The principal landform of northwestern Italy is _____.

Answer 1

#3 is less than one percent because the rest of it is in glaciers, or sea water, which isn't readily usable, it must be boiled first.

Answer 2

1. picnics, football games, field trips, creaky knees
2. it's expensive
3. a small
4. shaped like the top of a boot.