What two advances have helped to slow the death rate and therefore allowed the world population to rise?

Sat no calculator section question in the picture

When your working with the passage-based reading questions on the psat do all of the following except. a)make sure you read each question throughly. b) try to answer each question before you look at the answers. c) plan to spend most of your time reading the passage. d) make sure your answer choice is the most correct number me

Essay on sustainable development of soiciety