Mechanical digestion works to: OOO
physically break apart food.
increase the surface area of food in the digestive system,
help the digestive system break down food quickly.
All of the choices are correct

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.

What is the next step in the process after a substrate enters the active site of an enzyme

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.