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