Gina is scuba diving when she notices a large fish glide over her. it has a flattened body and she notices gills on its underside. which taxonomic group does the fish belong to? a. selachii b. batoidea c. sarcopterygii d. actinopterygii

The correct answer is B. Batoidea

Explanation:

Batoidea is an order of cartilaginous fish which are commonly known as rays. Rays are morphologically different from sharks as their body is flattened and disk-like with very large pectoral fins.  

In rays, mouth and gills are present on the underside of the body. They have five gills that are used for the diffusion of gases and are present on its ventral side but in sharks, gills are present on the side of their head.

Their flattened body helps them to hide in the sand of the ocean floor which prevents them to become prey to large predators like sharks and killer whales. Therefore the right answer is B. Batoidea

the denominator has a very specific role.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."