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