Answer:
break down dead mat and produce oxygen
Answer: C. <em>Nick believes he did well on the exam because the exam was easy.</em>
Explanation:
Nick is relating his performance on the exam to an external factor (the difficulty of the exam being easy).
All the other answers are relating the exam to internal factors such as intelligence, personal knowledge, and effort.
Answer:
Made mostly of collagen, bone is living, growing tissue. Collagen is a protein that provides a soft framework, and calcium phosphate is a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong and flexible enough to withstand stress.