Current observations of a new star forming support the nebular theory because they show a disk-shaped plane surrounding the star, which may eventually form

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Why do bacteria thrive even in hostile environments

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?