The formation of the solar system from a huge cloud of dust and gases is called the . a. protoplanet hypothesis
b. planetesimal hypothesis
c. solar hypothesis
d. nebular hypothesis
e. none of these

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