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