Well, we know that a lot of the ancient civilizations were first-handedly affected by disease. For example, Native Americans were severely impacted by the spread of pestilence. 90% of their population was completely killed off. I think that would be enough to concern them, don't you think? :P
ANSWER- can we have a list to chose from Explanation:
Answer:(A- it is made of nuclei acids
Explanation:
i know because it easy but its problly
wrong
Answer:
Bone is a type of mineralized connective tissue that contains collagen and calcium phosphate, a mineral crystal. Calcium phosphate gives bone its firmness. There are two types of bone tissue: spongy and compact.
Explanation: