简答题 Every time a population doubles, the country involved needs twice as much of everything, including hospitals, schools, resources, food and medicines to care for its people.

A．imagining and handling objects
B．providing a computer with a set of instructions
C．shooting a gun and driving an automobile
D．planning and making things as an engineer does

A．World population is increasing at a rate of 150 per minute
B．lower death rate also contributes to world population growth
C．The population of Columbia has been doubling every year for 21 years
D．The United States is usually doubling its population on about every 87 years