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