Oil, natural gas, and coal are considered to be nonrenewable resources. why are these fuels considered to be nonrenewable? a) the burning of these fuels does not allow the waste products to be recycled. b) these fuels are available in a limited supply--when the fuel is used it is no longer available. c) the amount of pollution released from the use of these fuels is much higher than with renewable sources. d) the technology used to generate energy by the use of these fuels is much older and less efficient than current technology.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.