Answer:
It is most likely C
Explanation:
People get sick and maybe the twin/sibling has a medical condition that may interrupt the experiment.
I think it is erosion (2) because erosion removes soil, rock, and dissolved material.
Answer:
A The gravity of the moon pulls the ocean, which causes the tides.
Explanation:
Well all of the other answers are just completely different.
if the moon is invisible tides cannot be seen, but why is it at night it is called high tide. B is very odd because many surfing events happen during the day.
It is A because it contains the most context, because it is the only reliable and realistic option, because when the moon is up, and the sun is down, it causes stronger waves
1983-1984 was when it was discovered
