Demography is the scientific study of a. parasitism and disease. b. modernized countries. c. human populations. d. none of the above

Why is the price of rice so important? a. rice prices must be kept within reach of the poorest peopleb. rice prices must make a large profit or no one will grow itc. rice prices impact the cost of fruits and vegetables on neighboring farmsb. rice prices have no real importance other than to large corporations

The yellow river is also known as the huang he river? true or false

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.