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