Kaylee wants to test her hypothesis that she performs better on tests after getting more sleep. in which way will she best be able to do this? by analyzing her test scores when she gets the same amount of sleep by asking her friends if sleep affects their test scores by analyzing her average test scores after nights with different amounts of sleep by reading online about the relationship between sleep and test scores

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