The correct answer is B. A bony skeleton
Explanation:
In biology, Chondrichthyes are mainly marine jawed fishes that have cartilage skeletons rather than bone skeletons and also they have paired fins, this includes animals such as rays and sharks. In terms of origin, it is believed this type of fishes are mainly linked to placoderms that were a type of primitive fish that lived during the Devonian period that had a body skeleton as they were covered by hard structures called plates made of bone. Because of this, it is believed this structures evolved into less rigid ones made of cartilage although both the primitive fish and modern Chondrictyles share features such as the structure of jaws. Therefore, Chondrictyles descended from fishes that had a bony skeleton.
Answer:
The correct answer is option a, that is SARS.
Explanation:
The bats are the flying mammals, which carries more than sixty viruses that can infect human beings, they even host more viruses per species in comparison to other species. The bats have been demonstrated to carry various harmful infections that comprise viruses associated with SARS and rabies. It has been shown that apart from these, the bats are the original hosts for various other deadly viruses like Nipah and Ebola that result in deadly brain diseases in humans.
<span> The organelle found in most plant cells but not in animal cells is the cell wall.</span>
Answer:
B: When severe weather occurs causing large waves to hit the coast.
Explanation:
when coastal flooding occurs, storms push the seasonal high tides towards the shore which causes the flooding
