This biome contains plants that are adapted to prevent water loss due to the low average rainfall and high temperatures year-round.

This is a Desert Biome.

Explanation:

There are hot deserts and cold desert.Here the question is stating about the hot deserts.Hot deserts are characterized by extremely hot and arid climate.Average annual range of rainfall is as low as 25 cm.Deserts lack vegetation except at some patches. Plants that survive in hot deserts have several adaptation to check the loss of water through transpiration.These adaptation include, succulent stems, cuticularized epidermis, Reduction of leaves into spines or thorns, stems modified into phylloclades and deep roots to absorb water.  

You should never redesign your experiment. try and see what in your experiment you made a mistake on or try and test your experimemt with somebody else. see if they get the right results.

Droughts cause very arid places such as a desert