How do kangaroo rats and desert plants adapt themselves to survive in their extreme habitat? Explain. [3]

Kangaroo rats undergo internal fat oxidation where water is a by product. It excretes concentrated urine. [1.5] Desert plants have thick cuticle, sunken stomata, leaves reduced to spines, have deep roots and special photosynthetic pathway (CAM) etc. which help them to survive in their extreme habitat. [1.5]