Which biome is characterized by little precipitation and hostile living conditions for plant and animal life?

Antarctica is a desert too.

The Sahara is one of the harshest environments on Earth, covering 3.6 million square miles (9.4 million square kilometers), nearly a third of the African continent, about the size of the United States (including Alaska and Hawaii).

I can't blame people for answering "Tundra" for this question. Desert is obviously more hostile with less precipitation so the answer that they want.

Tremain White, true. There is no rain in Antarctica and it is an extremely hostile environment

Player #29684811, I live in the Mojave Desert, but we do not use air conditioners, but use evaporative coolers instead. Very economical.

Tremain White, Mar-al-Lardo is an intelligence desert!

to be fair what is Tundra but a cold desert, both can equally kill ya at their extremes, if your not adequately prepared.

Julia, I live in Bulgaria, but old school, wet towels over doors, air flow to cool stuff, thumbs up anyone who knows about passive water evaporation as a cooling technique!

Tremain White, hope nobody takes offence. I vote for Antarctica. if you want to go for an extremely hostile environment, for us O2 breathers, try undersea fumeroles! no precipitation! smile

Julia, Ah, the trusty swamp cooler. I grew up in Vegas, remember those well.