PLEASE HELP 100!!!!! POINTS

i will ans the 2nd part first:
heat sources 4 homes: those wuld be renewable resources that generate heat. They include geothermal, solar water-heating and bio-mass.
primarily produce electricity: those wuld be something that is big like a dam for hydroelectric, wind turbine for electric generation, and solar farm for electricity.
The most common renewable resources used to produce electricity are: geothermal power plant, hydroelectric plant, wind turbine and solar panel farms.
The renewable resources used as heat sources for homes can be water-heating system with solar energy and in colder regions, geothermal heat wells.