Question

each of the passages below is an excerpt from a different type of source (textbook, popular science article from a reputable source, wikipedia, and primary research article). match each source with the best example of when a scientist might use that specific type of source. note: there may be additional uses for these sources that are not listed.
textbook chapter about photosynthesis
article in the magazine scientific american about how research to understand photosynthesis are being applied to improve solar electric technology.
wikipedia entry for photosynthesis
research article in the journal science about how chaparral plants in the field respond to elevated co2 levels.

Explanation:

A textbook chapter about photosynthesis is a reliable source for basic knowledge - it can be used to refresh one's memory about the fundamental concepts of photosynthesis. An article in Scientific American is a popular - science source that often covers how research findings are being applied in real - world scenarios, so it can be used to learn about current applications of photosynthesis research in improving solar electric technology. A Wikipedia entry is a general - knowledge source that can provide a quick overview or summary, useful for getting a quick news - like summary about photosynthesis. A research article in a journal like Science is a primary research source and can be used to look up detailed, original research findings, such as how chaparral plants respond to elevated CO2 levels.

Answer:

Textbook chapter about Photosynthesis - Refresh your memory about the fundamental concepts of photosynthesis
Article in the magazine Scientific American about how research to understand photosynthesis are being applied to improve solar electric technology - Learn what is the current application of photosynthesis research in improving solar electric technology
Wikipedia entry for Photosynthesis - Get a quick news summary about photosynthesis
Research article in the journal Science about how chaparral plants in the field respond to elevated CO2 levels - Look up detailed research on how chaparral plants respond to elevated CO2 levels