<span>b.native elements. trust me i took this quiz</span>
I think the answer is B. Involves a change in chemical bonds (hope this helps:)
appear; disappear
im not 100% sure if thats what is being asked, but they fit and are true
Answer:
stationary front
Explanation:
When a warm air mass and a cold air mass meet, but they push at each other and neither one can move, it is called a/an Stationary front
Answer:
I believe it would be the second option