College of Natural and Applied Sciences, Igbinedion University, Okada, Edo State, Nigeria Publisher contact person: Prof. Longy O. Anyanwu Email: anyanwu.longy@iuokada.edu.ng, cnasjournal@iuokada.edu.ng Phone: +234 81 64004804 Mailing address: College of Natural and Applied Sciences, Igbinedion University, Okada, Edo State, Nigeria www.iuokada.edu.ng