Which of the following is the best hypothesis? O A. Tearing a piece of paper is an example of a physical change.
B. Physical changes are much less interesting to watch than
chemical changes.
C. Some chemical reactions absorb heat, and others release heat.
D. If sodium carbonate is added to vinegar, the reaction will absorb
heat.

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.