Energy is a resource too: which step in the WMH is being used in the cases below? Explain. If unsure of what a case refers to, go to the Internet for an explanation. (a) Heat is recovered from sewage...

Energy is a resource too: which step in the WMH is being used in the cases below? Explain. If unsure of what a case refers to, go to the Internet for an explanation. (a) Heat is recovered from sewage effluent.20 (b) Heat is recovered from a power plant’s air emissions. (c) Methane is collected from a landfill for use as a fuel. (d) Regenerative braking is used in a hybrid car. (e) Incandescent light bulbs are replaced with compact fluorescent bulbs.