In 1998 paleoanthropologist Rick Potts of the Smithsonian institution published an article in the yearbook of physical anthropology a peer reviewed Journal the article was titled environmental hypotheses of hominin evolution in his paper pots provided evidence to support his claim that gray variations and environmental conditions over time or responsible for the attacks ability of humans and the success of our species why might this not be the best article to reference?

Because the author of the article did not do an experiment to draw his own conclusions and issue his own information, but he did a bibliographic review of the work of other authors to write his own article.

Explanation:

The article presented in the question above was done through a bibliography search and not through an experiment. This means that the author did not test the hypotheses through a scientific experiment, but formulated the conclusions of his article, based on the works of other authors, which makes this article not the best option to be considered as a reference article.

a. the production of carbon dioxide through the process of photosynthesis

the answer would be..

b. sucking