C. Artificial nuclear radioactivity
D. Chemical reaction
A. Jabar bin Hayyan
B. Zakariya Al – Razi
C. Abu Ali Sina
D. Abdul Qasim Majreeti
D. Rice straw
A. the birth rate is high in developing countries
B. the death rate is high in developing countries.
C. much of the population has already reached the child bearing age.
D. most of the world’s population lives in industrialized countries.