Answer:
B. Cartilaginous fish
Explanation:
Sharks have a cartilaginous skeleton. Cartilage is less dense than bone which allows sharks to move quickly through the water without using too much energy.
Http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0072434/
There is a website with some info. Hope it helps! :)
Answers
The explanations that provide support for continental drift theory are;
• Coal fields match up across continents
• Tropical plant fossils were found in Arctic areas
• Similar rock types are found across continents
• Evidence of glacier can be found in South Africa
Explanation
According to Alfred Lothar Wegener in his studies on the origin of continents and oceans, he outlines that the theory of continental drift can be supported by five evidences which are; the jigsaw fit of the continental alignment, geological fit, tectonic fit, glacial deposits and fossil evidence.
