Reports stretch back to 2020 and across the (a)   .

(a half of the earth, usually as divided into northern and southern halves)

(a)   of computer chips convert electricity to light.

(ordered series or arrangements)

Purple doesn't exactly (a)   a sidewalk the way white does.

(make [something] visible or bright by shining light on it)

He found himself put under (a)   by national security.

(close observation, especially of a suspected spy or criminal)

Streetlights aren't supposed to (a)   change color.

(without apparent external cause or stimulus)

The mystery is a check-engine light on the entire infrastructure of (a)   .

(the ideas and attitudes associated with the modern world)

an -ity noun that has to do with mothers

(a)  

an -ity noun that references the doing of something by design or on purpose

(a)  

an -ity noun that refers to the usefulness of something

(a)  

an -ity noun that refers to the ease or difficulty of express something in another language

(a)