Astudy reported on the effects of vitamin c in breast milk for breast-feeding mothers. the children whose mothers had chosen to take high doses of vitamin c had a 30% lower risk of developing allergies. can you conclude that the use of vitamin c caused the reduction in allergies? why or why not?

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

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.