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