I think the word you're looking for is "hypothesis".
For example, a hypothesis could be "dogs drink more often when owners are present".
And then this can be proven (or dis-proven) by an observation (or in this case rather: measurement).
The answer is, Silk, Rice, and indigo! Hope this helps!
The answer is c
hope u get it right
True, because they were born on american soil.
I think the answer is A. You become a legal adult at the age of 18 .