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