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