Julio eats a taco for dinner. What represents a physical change in the taco? A) saliva changing the starch in the crust to sugar

B) teeth tearing off a bite of a taco

C) chemicals in the stomach digesting proteins

D) breaking down of fats in the taco by bile

Which best describes why nh4+ can form an ionic bond with cl-?

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

What must occur for air masses to form fronts