select all that applywhich of the following contributed to an increase in world population in the 20th century?
a) improved medicine and sanitation
b) an increase in food production
c) disease
d) an increase in the average life expectancy

what do you                                                                                                                                              

legislative branch:

one of the three branches of government divided between the senate and the house of representatives.

- creates or makes laws

- power to override a veto

executive branch:

one of the three branches of government, headed by the president.

- enforces or carries out laws

- power to veto a bill sent to it by congress

judicial branch:

one of the three branches of government, headed by the chief justice of the supreme court.

- interprets laws

- power to declare laws or actions by the government unconstitutional