Which statement is not true of simple machines? a. they can change the amount of work done on an object. b. they can change the distance over which you apply a force. c. they can change the direction in which you apply a force. d. they can change the amount of force you exert. this is science

The correct answer is B. They can change the distance over which you apply a force.

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.