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