Final answer:
Deserts receive an abundance of sunlight due to low humidity and the absence of tall vegetation, which allows unobstructed solar exposure. They are characterized by minimal rainfall and high rates of evaporation, leading to high temperatures and sunny conditions.
Step-by-step explanation:
Deserts get a lot of sunlight due to low humidity and lack of tall plants. The correct answer is d) Sunlight. Deserts are generally dry ecosystems with very little rainfall, and the lack of moisture in the air (low humidity) and scant vegetation allows for unobstructed sunlight to reach the ground. This is unlike other biomes, where taller plants and trees may block some of the sunlight, creating shade and thus reducing the amount of direct sunlight reaching the ground. Additionally, because deserts have such low humidity, there is less water vapor in the air to reflect sunlight, allowing for more intense solar exposure.
The lack of humidity in desert regions is influenced by several factors, such as location on the leeward side of mountain ranges, which creates a 'rain shadow' effect, or the presence of high-pressure systems that cause dry air to descend. These conditions promote high rates of evaporation and make deserts some of the hottest and sunniest places on Earth. Desert plants and animals have evolved various adaptations to this environment, such as reduced foliage and nocturnal behavior, to conserve water and manage the extreme temperatures.