Suggest why burning wood instead of coal would help to reduce your carbon footprint

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

When a nucleus absorbs a neutron and then breaks apart, there are many products of the reaction. what is not a product of a nuclear fission reaction

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb