Answer:
D. Porifera
Explanation:
Porifera are sponges filled with pores and channels which allows for easy passage of water the body is not segmented
Answer:
Otter
Explanation:
Otters depend on yellow perches, if the amount of yellow perches decrease so will its predators.
Nucleus Contains genetic material, including DNA, which controls the cell's activities.
Sulfur has 6 valence electrons