Regina is a 22-year-old college student who plays on her school’s soccer team. her coach invited a registered dietitian nutritionist to talk to the team about sports nutrition. the rdn recommended minimizing trans fatty acids from processed and packaged foods, but she explained that some trans fats do occur naturally. what foods have naturally occurring trans fatty acids?

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.