Biology, 01.09.2020 20:01 gwendallinesikes
Why do skates and rays have flattened bodies, while sharks are torpedo shaped?a. Sharks are more closely related to the tube-like lampreys than are skates and rays. b. Skates and rays need enlarged pectoral fins to help them stay level in turbulent water, while sharks do not. c. Skates and rays exchange gases across their skin and thus require a high surface-area-to-volume ratio, while sharks use gills to respire. d. Sharks are streamlined for active swimming at mid-depths, while skates move about mostly on the ocean bed.
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Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry
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Biology, 23.06.2019 07:00, ZVSaniya0420
An explanation of how the carbon atom is transferred between molecules. include descriptions of the molecules involved in each of the processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another.
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Why do skates and rays have flattened bodies, while sharks are torpedo shaped?a. Sharks are more clo...
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