This is science but i cant find a science subject on here.
as we learn more, are often revised.

a. scientific law
b. scientific theories
c. observation
d. experiments
: /

the answer is c.

hope this : )

if you could provide an excerpt for me to read i could

the fraction 18/22 is equivalent to 9/11.

in decimal form if needed

this is a proper fraction once the absolute value of the top number or numerator (18) is smaller than the absolute value of the bottom number or denomintor (22).

the fraction 18/22 is equal to 18÷22 and can also be expressed in decimal form as 0.818182.

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.