In Figure 4, three diagrams (labeled A, B, C) of a house located in the northern hemisphere mid-latitudes (about 40 °N) with a south-facing window are presented, along with the position of the noontime sun. Which diagram represents the situation during the first day of summer, the first day of winter and the first day of spring and fall? Explain your answers.

In 2015, about ten percent of total u. s. energy consumption was from renewable energy sources. renewable energy plays an important role in reducing greenhouse gas emissions. when renewable energy sources are used, the demand for fossil fuels is reduced. sanjay and his family want to cut back on their use of non-renewable resources at home. they are thinking of an alternate way to heat their home without adding more greenhouse gases or pollutants to the environment. which renewable resource would not fit into their plan? a) solar power b) burning wood c) constructing a wind turbine eliminate d) generating hydroelectric power