Dry and wet
Winter and summer
Winter and fall
Spring and summer
Having deep roots
Growing quickly
Developing fire-resistant cover
All of the above
Grassland
Desert
Temperate forest
Tundra
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
Antarctica
Asia
North America
Australia
They avoid each other as much as possible
They eat different foods
Their territories don't overlap
They all migrate in different directions