a) The scientific source that I found is a text called: Carbon Dioxide and Environmental Stress. Specifically chapter 5: Interactions between Rising CO2, Soil Salinity, and Plant Growth.
The link to the source is below:
Carbon Dioxide and Environmental Stress (tru.ca)
b) This text would be classified as Academic, Peer Reviewed Research Material
c) Academic Material: The authors are experts in their field from both the Desert Research Institute and Stanford Universitry in the United States along with contributions from many additional academics. The work includes in-text citations, research data, and an index of other works referenced.
Peer Reviewed: The text is a cumulative work completed and reviewed by multiple academics who are experts in the field of Ecology.
Research Material: The text includes conclusions, limitations, and methods of hypothesis testing.
Resource:
Mooney HA, Luo Y. Carbon Dioxide and Environmental Stress. Academic Press; 1999. Accessed June 8, 2023. https://search-ebscohost-com.ezproxy.tru.ca/login.aspx?direct=true&db=nlebk&AN=203241&site=eds-live&scope=site
okay good effort to use the flow chart to determine sources
a ‘text’ usually is written to communicate ideas made from studies and other works to students etc and isn’t a research piece in itself
I couldn’t actually find a ready link off the link posted above but did find it through google
to that end, the chapter is a summary of known research under some headings. it isn’t a study in its own right, as noted
also, as a note, try and find more current sources if you can (1999 is a bit old)