There are many kinds of pyroclastic material ejected during a volcanic eruption. Ash is the most common pyroclastic rock material ejected during an eruption. Volcanic ash is so fine that it can be blown into the atmosphere and picked up by the jet stream where it can circle the Earth for several years.
Answer:
D
Explanation: this was easy for me
Answer:
60-20=40km west because the direction Will favour whichever direction is bigger
The 2 represents that it is a double carbon bond
it looks like..
C-C = C-C
