Match the letter with the answer a. world population doubled twice in this time frame b. the last drop in human population rates c. industrial revolution 19th century d. human population doubled during this time period the start of major population growth. 20th century. black death pandemic. 19th century.

What is a compass? how does it work

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor. b. increased mechanization has increased the need for water, thereby increasing the need for labor. increased mechanization has increased the use of land, thereby increasing the need for labor. d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

In what way does renewable energy differ form nonrenewable energy?