28. why is ethanol important?\na. it produces a fuel from a renewable resource.\nb. it eliminates the need…

28. why is ethanol important?\na. it produces a fuel from a renewable resource.\nb. it eliminates the need for nuclear power.\nc. it produces electricity on demand for hybrid vehicles.\n\n29. what kind of thematic map would be best to use when showing population density?\na. dot density map\nb. proportional symbol map\nc. point symbol map\n\n30. which of the following maps covers a large area and shows very few details?\na. large - scale map\nb. thematic map\nc. small - scale map

28. why is ethanol important?\na. it produces a fuel from a renewable resource.\nb. it eliminates the need for nuclear power.\nc. it produces electricity on demand for hybrid vehicles.\n\n29. what kind of thematic map would be best to use when showing population density?\na. dot density map\nb. proportional symbol map\nc. point symbol map\n\n30. which of the following maps covers a large area and shows very few details?\na. large - scale map\nb. thematic map\nc. small - scale map

Answer

Brief Explanations:

For question 28, ethanol can be produced from biomass (a renewable resource) for fuel use. It doesn't eliminate nuclear - power need and doesn't produce electricity on - demand for hybrids. For question 29, a dot - density map is used to show population density by representing each dot as a certain number of people. For question 30, small - scale maps cover large areas with few details, while large - scale maps show small areas in detail and thematic maps focus on a particular theme.

Answer:

  1. A. It produces a fuel from a renewable resource.
  2. A. dot density map
  3. C. small - scale map