What is the saros cycle? a) the annual cycle of the seasons b) the 26,000-year cycle of the earth's precession c) the roughly one-month cycle of lunar phases in the sky d) the roughly 18-year cycle over which the pattern of eclipses repeats

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

With physics question #5? for any !

Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: