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