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