Basically, lines can be used in three ways in drawing: to be used as contour lines, hatching lines, and cross-hatching lines.

Which of the following is not a necessary step for an insect farm A: Waste pre-treatment B: Adult feeding and mating C: Larval hatching D: Larval rearing

A behavioral ecologist is studying the behavior of ducks. Right after hatching, the ducklings are shown a large moving object, as well as the first few days after hatching. The ecologist notices that the ducklings are following the object wherever the ecologist moves that object. Which of the following behaviors would the ecologist suggest is responsible for the action of the ducklings? A: altruism B: imprinting C: fixed action pattern D: operant conditioning