On a day wilderness expedition you'll need to heat of water to the boiling point each day. The air temperature will average. You have available canisters of compressed propane fuel, which you'll burn to heat the water. Each canister has of propane in it. What is the minimum number of fuel canisters you must bring?.

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.