The current interest in continental drift was started with the notion of sea- floor spreading, which was propounded by hess and dietz in the ) 1700s b) 1850s c) 1990s d) 1890s e) 1960s

Formulating a hypothesis: part i since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of " because when writing your hypothesis