Which list represents all those of organization and biology from symbols of the most complex??? Please help

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist