How many deserts are there in North America?
4
3
3
3
2
3
2
3
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
1
5
3
4
2
6
1
5
3
4
2
6
1
5
3
4
2
6
1
5
7
3
4
2
6
1
5
7
3
4
2
6
1
5
7
3
4
2
6
1
0
5
7
4
2
6
1
5
7
0
4
2
6
1
5
7
0
4
6
1
5
7
4
6
1
8
0
5
7
4
6
1
8
5
7
9
0
6
1
8
5
7
9
0
6
1
8
5
7
9
6
1
8
0
5
7
9
6
1
8
5
7
9
0
6
1
8
5
7
9
6
1
8
10
7
9
6
1
8
10
7
9
6
1
8
10
7
9
6
8
10
7
9
8
10
7
9
11
8
10
7
9
11
8
10
9
11
8
13
10
9
ten
11
8
13
10
9
12
11
ten
14
13