Warm surface waters get depleted of nutrients and carbon dioxide, but they enrich again as they travel through waters in the conveyor belt. The base of the world's food chain depends on the cool, nutrient-rich waters that support algae and seaweed. Question 3 options: shallow deep freshwater saline

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from

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.