Why is it important to conserve art?

What do the olmec colossal heads represent?

To create an illustration of perspective, this artist did all of the following except 1) show clear orthogonal lines 2) have an implied vanishing point 3) distort proportion to keep the background and foreground the same size 4) include value changes between the foreground and background i was thinking maybe 1

Which paris event introduced nineteenth-century musicians to the music of asia, the middle east, and africa? a. the 1848 world revolution b. the 1900 world's fair c. the 1880 international exhibition d. the 1889 world exhibition