What differentiates sharks from whales? a. sharks have a dorsal fin and whales only have lateral flippers. b. sharks are toothed cetaceans and whales are baleen cetaceans. c. sharks can breathe underwater while whales have to surface to breathe. d. sharks eat fish and larger creatures while whales eat only krill. e. sharks have smooth skin while whales have scaly skin.

Option-(C):

"Sharks can breathe underwater while whales have to surface to breathe."

Explanation:

Sharks:

Sharks are cartilaginous forms of fish, and these species are living from over 400 millions in the water i.e oceans. As fish are characterized by folded openings on either side of its body. Due, to the system of gills present in the fish body's brings the specialty to the specie that it can collect or extract the amount of oxygen,O₂ from the water or environment in which it is present. As they are able to breath inside the water.

Whales:

Whales are mammals and obviously most of the mammals posses the lungs to breath. And for that reason whales needs to come over to the surface in order to breath. Because, oxygen can not be extracted or collected from the molecules present inside the water. Whales are more different in nature to the sharks.

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