Digestion in the body occurs chemically and mechanically. The digestive process starts in the mouth as the teeth grind the food and saliva adds digestive enzymes. The process continues in the esophagus aided by peristalsis. In this passage, peristalsis is
A the addition of pepsin.
B the absorption of lacteals.
C the production of bile.
D the contraction of muscle.

Describe five factors that influence the value of fuel

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms