How are proto-neurons thought to have evolved in early multicellular animals? a. through duplication of bacterial ion channel genes. b.through natural selection for increased speed of transmitting information. c.through mutation of bacteria ion channels. d.through horizontal gene transfer between early multicellular animals.

Awolf pack hunts,kills, and feeds on a moose. in this interactions, the moose is a?

Your two friends just told you what to order for them at the drive through fast food restaurant. you give the order but when the food comes about 10 minutes later, you don't remember what each of your friends ordered your memory of the order was in __ memory. a. semantic b. flashbulb c. long-term d. short-term i think i know but i'm not really sure

Pulmonary arteries carry highly oxygenated blood. true or false?