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