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