In our areas note the difference between storms out of the north and out of the south. Realms of Biodiversity Convergent evolution can be seen in similar habitats on different continents. Fish in Africa and S. America Grasses of Russian Steppes and N. America's prairies High altitude in mountains mimics species from lower altitudes as one travels north. They heat rapidly and cool rapidly at night. Plants have many adaptations for conserving water or storing it.
Animals are mostly nocturnal.
Tough woody plants that conserve water. Not very productive. Animals browse leaves. Good goat country. Usually kept grassy by prolonged droughts that kill trees.