How quickly velocity changes. Velocity changes when speed or direction changes. An object speeds up, slows down or changes directions. Group of answer choices

Acceleration

Velocity

Mechanical Energy

Speed

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere