A scientist wants to study snails in an ecosystem. The snails move slowly and are incapable of traveling long distances. Which method would be most effective? Which method would be least effective? Use the information you put in the chart to explain your reasoning.

Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub