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