1. describe the general trend of human population growth that has occurred over time.

2. what factors explain why populations in different countries grow at different rates

3. what is demography

4. describe the demographic transition and explain how it might affect a country’s population growth rate.

5. why do you think age-structure diagrams can predict future population trends?

1. The general trend of human population growth is that the growth rate of population is increasing over the years .

2. Countries of the world differ in birth rates, death rates and age structure of population and this factor explains why population  in different countries grow at  different rates.

3. Demography is the study of human population in terms of births, deaths etc is called demography.

4. Demographic transition is the shift from high birth and death rates to high birth and low death rates and finally to low birth and death rates. Demographic transition reduces the rate of population growth of a country.

5. Age structure diagram contains data about individuals who belong to the younger age group. Once they become mature they will contribute to population growth and thus studying the age structure gives an idea the trends of future population growth.

helicase, i think thats it

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.