Justify the claim that photosynthetic organisms that live less than 25 feet below the surface of the ocean need allophycocyanin to survive. Provide reasoning that explains this claim

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?

Approximately how much solid waste do americans produce annually? a) 250 tons b) 250 thousand tons c) 250 million tons

Afeature in the early hominid was her apelike shoulders and forelimbs, but a pelvis that indicated that most of her body weigh lay above her pelvis, which best explains the fossil?