Asia
North America
Antarctica
Australia
Having deep roots
All of the above
Growing quickly
Developing fire-resistant cover
Temperate forest
Tundra
Desert
Grassland
Spring and summer
Winter and fall
Winter and summer
Dry and wet
The savanna gets a fair amount of rain, at least 20 inches a year.
They have thorns
They have toxic chemicals
Ants protect them
A combination of the above defenses
They all migrate in different directions
They avoid each other as much as possible
They eat different foods
Their territories don't overlap