The answer is concentration gradient. Have a good day.
The correct answer is - A) Swamps tend to be humid while deserts tend to be dry.
The swamps are places that are dominated by shallow, murky waters. The precipitation at these places is relatively high, and the climate tends to be pretty stable throughout the year, being relatively warm. Because of the precipitation, the water surface, and the temperatures, the swamps tend to be very humid places.
The deserts are the total opposite. They are dry all year round, with maybe one or two days in the year where precipitation will occur, though occasionally that may be once every several years. Depending on the type of desert, the climate is either very hot all year and very dry, or very hot in the summer and very cold in the winter and dry.
An area of a desert can support a population of 320 cactus plants because it shows how much the Desert can carry.
