The adverb is slowly, Because adverbs tell what kind, how or to what extent. The adverb slowly (usually, they end in ly) is describing HOW someone did something. EX. Jessie ran slowly across the field. It tells how jessie ran.
And adverbs describe a verb.
I believe you would use the semicolon. I'm not totally sure. ( ; )
19 is personification and numbness 20 is “a memory sequence ....”
System Thinking<span> is the art and science of making reliable inferences about behavior by developing an increasingly deep understanding of underlying structure. Its related to side effects because the behavior interferes with the side effects depending on it's structure. </span>