Answer:
Angular unconformity
Explanation:
An angular unconformity is the contact that separates a younger, gently dipping rock unit from older underlying rocks that are tilted or deformed layered rock. The contact is more obvious than a disconformity because the rock units are not parallel and at first appear cross‐cutting. Angular unconformities generally represent a longer time hiatus than do disconformities because the underlying rock had usually been metamorphosed, uplifted, and eroded before the upper rock unit was deposited
Evacuate Family,Friends and Yourself to the Evacuation area.
Bring First-Aid kit when possible.
Stay inside to avoid getting hurt by Strong Winds, Strong Volcanic Eruption,Strong water level And a huge Storm
it matters on witch way your trying to lenght the distance from onther cause it could be diffrent
An online forum.
All the other answer choices aren't related to <em>answering a question</em>.
For example, online market sells stuff. Social book marketing site sells stuff. Social news site promotes news.
Only an online forum allows members to discuss topics and ask/answer questions.