How does scarcity drive the economy?

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.