As humans increased the control of fire, which of the following happened?

a no change in the number of calories consumed.
b an increase in the number of calories consumed.
c a decrease in the number of calories consumed.
d an increase in the number of calories consumed for men, but a decrease in the number of calories consumed for women.

Which of the following is true? a. under the current unemployment insurance system, benefits replace about 90 percent of the typical worker's prior pretax earnings. b. high benefit payments to unemployed workers will tend to increase the rate of unemployment. c. if a system of personal savings accounts replaced the current unemployment benefit system, the unemployment rate would fall to zero. d. the rate of unemployment in the large european economies has been persistently lower than that of the united states due to their more generous unemployment benefits.