Which of the following is a base? (3 points)

AgO

Ca(OH)2

HF

NaCl

Ca(OH)2 is base

is answer of this question

hope this will help you more

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

i think it is true since you can test the answer and can use observations to complete it.