Around 1880, a level of schooling past basic education was developed known as
O A. secondary school
O B. post-secondary education
O C. higher education
D. primary school

Did the universe cool off or get hotter as it expanded after the 'big bang"?

What is the leading cause if water scarcity throughout much of the world

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils