The nervous system is responsible for voluntary/involuntary movement. The glands of the endocrine system produce hormones that are responsible for growth, metabolism, sexual function, etc.
Answer:
Explanation: Ctenophores move in water, they have a flapping motion.
hope this helps :)
3.13 x 10 ^9
This is because only 1 number is front of the decimal and 2 numbers should be after