With some adjustments to the engine, it is possible to (swap) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable vegetable oil for gasoline in some vehicles. With land burning throughout the western United States, more firefighters were brought in to (fight) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable the huge wildfires. These days, farmers use highly sophisticated machines to (pick) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable their crops. Before computers, librarians had to (organize, list) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable all books by hand. The heat was (too much) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable . People were warned to stay indoors. There is general (agreement) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable within the scientific community that global warming exists, but scientists hold different opinions about how to address it. After he graduated from university, he managed to pay off all his (money owed) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable within 3 years. The city decided to (try to solve) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable the housing problem by first holding public meetings in order to listen to the residents' ideas for improvement.  When a threatened species of bird was discovered in the forest, all tree cutting was (stopped) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable . Wind and solar power are examples of (replaceable) [ Select ] substitute combat harvest catalog excessive consensus debt tackle halted renewable energy sources.