In an area with tall grass but with very few trees, which of the following other conditions are most likely to exist as well? (1 point)
1. It is near 30° latitude north or south or on the leeward side of a mountain range.
2. Moist air is rising over the area.
3. Night temperatures are much colder than daytime temperatures.
4. The soil has a thick layer of decomposed, nutrient-rich organic material.
5. There is an extremely high diversity of species in the area.
6. There is little rainfall and frequent fires regularly cut the vegetation to the ground.