Science Bowl Question

W) Harness the power of the Sun to dry clothes by means of a special solar alternator to reduce electricity consumption

X) Harness the power of the Sun to provide a way of storing food for underdeveloped communities

Y) Use the Sun's heat to convert water into steam through a solar collector and a turbine

Z) Use the Sun's heat and wind to evaporate water and then condense it to be able to dry fruits through steam