Their bodies taper to points at both the snout and the tail, reducing water resistance. Also decreasing drag -- and therefore noise -- are dermal denticles, sharp scales that cover the skin of most shark species. Rather than bone, sharks have cartilage, which is much lighter and more flexible. In addition, their livers produce squalene, a fatty oil that helps them remain afloat. Their pectoral fins allow them to quickly change direction, dive and swim upward.
http://animals.mom.me/unique-adaptations-sharks-survive-7845.html
Answer:
Vegetation structure that is dominanted by grasses
Answer:
ummm
Explanation:
6+6+9
21
hope that's it but you'll have to tell me the answer cause I don't know it
Near the surface or the shallow water. Hope I helped
