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