The answer is b desert. All other choices can support certain organisms, unlike a desert. Most rich biodiversity's are found in places where there is water. Water is one essential factor in the world that helps support life. River floodplain, delta, and valleys have this element that makes this area rich habitats.
Heat travels from a higher concentration of heat to lower concentration of heat. The heat will diffuse to the cooler areas, which means the handle would be heated, and the cook feels the burn since the heat will travel to him because of the temperature difference between him and the pot.
