A mammal adapted to a hot desert is most likely to have:

1. In heat the problem is losing heat, so the body maximises the surface available. 2. Large ears carry a wide, richly supplied surface from which heat radiates away. 3. A thin coat lets heat escape rather than trapping it. 4. The cold-climate pattern is the reverse: small extremities cut heat loss and a thick coat traps air as insulation. 5. Pairing large ears with a thick coat combines a heat-losing feature with a heat-keeping one, which no climate selects for. _Source: NECTA ACSEE 2023 Biology 133/2, Question 2: Regulation (Homeostasis)_