__ refers to the sequences of words that determines the semantics

When the blood leaves the atria (upper chambers) where does it flow to? a. aorta b. lungs c. ventricles d. rest of the body

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

What are the properties of the founder effect? a. adaptive, may be gradual or dramatic depending on the situation b. non adaptive, gradual c. adaptive, gradual d. non adaptive, random e. adaptive, dramatic