Question

35 multiple choice 2 points in an area away from forests and cities, geochemist charles david keeling measured the amount of ______ in the air. carbon dioxide nitrous oxide ozone oxygen 36 multiple choice 2 points detailed maps showing the locations of sewer lines, roads, and parks are possible with gis. topo. gpn. map.

Explanation:

1. Charles David Keeling is well - known for measuring carbon dioxide levels in the atmosphere. His measurements have been crucial for understanding climate change.
2. GIS (Geographic Information System) is a technology that can be used to create detailed maps showing various features like sewer lines, roads, and parks by integrating spatial data.

Answer:

1. A. carbon dioxide
2. A. GIS