Could individuals of a species look different today than individuals of the same species did many generations ago? Why or why not? a) Yes, all individuals can change a little and pass those changes on to their offspring.
b) Yes, some individuals can change a little and pass those changes on to their offspring.
c) Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring.
d) No, species do not change even after many generations, so individuals of the same species would not look different.

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.