How many deserts are there in North America?
4
4
2
4
3
2
4
3
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
1
4
3
5
2
1
4
6
3
5
2
1
4
6
3
5
2
1
4
6
3
5
2
1
4
6
0
3
5
2
1
4
7
6
3
0
5
2
1
4
7
6
3
5
2
0
1
4
7
6
3
5
2
1
4
7
6
0
3
8
5
2
1
4
7
6
3
0
8
5
2
1
4
7
6
3
8
5
2
0
1
4
7
6
3
8
5
2
1
4
7
6
3
9
10
8
5
2
1
7
6
3
9
10
8
5
1
7
6
9
10
8
5
1
7
6
9
10
8
5
11
1
7
6
9
10
8
11
1
7
6
12
9
10
8
11
1
13
7
6
12
9
10
8
11
1
13
7
6
12
9
10
8
11
13
7
6
66
12
9
10
8
11
13
7
12
9
10
66
8
11
66
66
62
63
66