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