I would say that this is the cell wall because it provides strength and protection for the cell. The armor for Nights is protection for the person inside of the armor. Hope this helps!
Adding a plant would reduce carbon dioxide because a plant takes in carbon dioxide and releases oxygen.
The correct answer is A.
Answer: neuron, collection of neurons, brain, nervous system.
Explanation:
Tight junctions hold the cells together as a rivet would in hardware so it can't be taken apart. This makes it so skin and intestines are very strong and don't break very often
