Answer:
Arthropods have a tough, non-living outer shell called exoskeleton, which protect their soft bodies while echinoderms have living endoskeletons, which develops within the deeper skin or body tissues and act as their protective covering.Explanation:
Earth science hope it helps
option c is the answer
Explanation:
septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks
Answer: body language and noises.
Explanation:
Answer:
the candle will go out
Explanation:
since without oxygen it can't burn in a closed environment the oxygen will either be to low or not even present
