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