Answer: a) Observation b) theory c) observation d) law
Explanation:
As we know that
Observation is the process of monitoring a particular thing very closely.
Law is the way to explain the body of observation with a help of mathematically statement or verbally. It represents the cause and effect between the elements which is generally observed.
Theory is the explanation that is tested repeatedly and verified with some method.
(a) All coastal areas experience two high tides and two low tides each day. - observation
(b) The tides in Earth's oceans are caused mainly by the gravitational attraction of the moon. - theory
(c) Yesterday, high tide in San Francisco Bay occurred at 2:43 a.m. and 3:07 p.m. - observation
(d) Tides are higher at the full moon and new moon than at other times of the month. - law
