1. (i) There is an increasing dependence today on natural sources of energy like sunlight and wind.   2. (ii) The breathing rate increases after vigorous exercise.   3. (iii) On entering a poorly lit room, one feels blinded for a short while.   4. (iv) Glucose is normally not found in urine.   5. (v) Xerophytes have their leaves modified to spines or reduced in size.