The discovery of a natural clock was so important because it allowed a more easier way to check time than to use the sun, or sigils.
D. desert
remember the sahara desert?
law is any concept that is true and real while theory is a concept which nobody can tell weather it is true or false
for eg :
Law- every action has equal and opposite reaction
(It is law because it is proven)
Theory- Big bang theory
(no one no it true or false)
Answer:
this is called reflect action