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