Regarding the experience of sound, which of the following statements is NOT true? Select one:
O
a. Women's voices are usually higher than men's because their vocal cords are longer.
O b. Sound waves travel slower than light waves.
O c. Humans hear by sensing sound waves.
O d. Pitch is the perception of how high or lowla sound seems.

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