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