Englishfor English speakers
uncertainty
Noun
—
Uncertainty is a state where there is a lack of certainty.
of
Preposition
—
Made using.
It is a house of cards.
observation
Noun
—
Observation is the act of carefully seeing things that happen.
To learn, you must be good at observation.
—
An observation is something someone saw, heard etc.
In science, we record our observations so we can think about them later.