Answer:
While humans, as well as other vertebrates, have a closed blood circulatory system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open circulatory system containing a heart but limited blood vessels.
Explanation:
Water is a Solute so your answer is C. have a nice day
Answer:
Retractable claws.
Explanation:
The farther down the line from the common ancestor, the fewer the animals that share that characteristic.
