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