Answer:
a) Students photographed, videotaped, and published the results online every time they measured sea levels.
Explanation:
hope this helps!
I don’t understand, could you repost it in English
What language is this sounds cool
Many have heard it, but nobody has ever seen it. It will not speak back until spoken to. What is it? The answer to the riddle is an echo. Echo is the reflection of the sound that when it is released by the speaker, it arrives back to the speaker (now listener) but is delayed.
