student listed how different parts of the body work to aid in the digestion of food. Which of the following is NOT a chemical change that occurs to the food? *

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Ineed ! i have no clue how to do this problem.