Breads and other whole grain foods are composed of very large polysaccharide molecules which contain hydrogen, oxygen, and which other element? a) carbon, b) iron, c) nitrogen, d) water

Males of different species of the fruit fly drosophila that live in the same parts of the hawaiian islands have different elaborate courtship rituals. these rituals involve fighting other males and making stylized movements that attract females. what type of reproductive isolation does this represent?