Answer:
Chondrichthyes characteristics include a cartilaginous skeleton, lack of a swim bladder, lipid storage restricted to the liver, unique hematopoietic organs, and bacteremia in clinically normal individuals. Variable reproductive strategies are employed throughout this vertebrate class.
Explanation:
The answer is is 6 if it is wrong I'm sorry because it gust learn that today
It is the rotation of the earth. when it rotates it causes a cycle of having the sun shine for some time, then the moon. hope this has helped, if did, plz mark as brainliest
That is cool i wish i had one to play with...
