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