Available choices:
1). storms;
2). rain;
3). hail;
4). thunder;
5). rivers;
6). cracks;
7). lightning;
8). wind;
Q: Fact 1: Rain causes erosion. Fact 2: With the rain comes floods, and with the floods come erosion and landslides. Given the two facts above, what can cause landslides?
A:
2).