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