Complete the wording of the Law of Conservation of Matter and Energy (as defined in the text). "Neither _ nor _ can be created or destroyed, but they can be changed from one form to the other."

distance
weight
motion
density
energy
matter
(more than one answer choice)

Write the correct abbreviation for each metric unit

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.