Based Only on the Information Given in This Biography, Discuss

Based only on the information given in this biography, discuss the credibility and authority of the person described on each of the topics in the list that follows:
Mike O'Neill is a scientist at the U.S. Department of Agriculture Forest Service's Northeastern Forest Experimental Station in Durham, New Hampshire. He graduated from Humboldt State University in California with a degree in biology (1988) and earned a Ph.
D.in plant pathology from the University of West Virginia (1995).After serving for seven years as a consultant to the Pennsylvania state park system, he was employed by the U.S.Forest Service as a specialist in tree diseases.His major area of research has been in the resistance mechanisms of trees to injury and infection.a.the effects of improper pruning techniques on fruit trees
b.the kind of fertilizer to use on ornamental shrubs
c.resistance mechanisms of mammals to disease and infection
d.the characteristics of various types of softwoods relative to their use in the building industry
e.how to transplant a small tree
f.use rates of campground facilities in Pennsylvania state parks
g.methods of controlling garden pests