What is not a major use of solar thermal energy? to provide hot water to provide heat for houses to warm buildings to provide electricity to homes

solar thermal energy can be even used to produce air conditioning I'm not understanding your question due to the fact that solar thermal energy produces hot water provides heat for houses and warms buildings great for space heating and can provide electricity

d. temperate deciduous forest

the answer for sodium is 0.186

the answer for rubidium is 0.251