4. Quickly sketch an embryo then label and define anterior, dorsal, ventral and posterior. 5. How do embryos use proteins to identify the different sections?

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the question isn't complete here so i can't right an answer '_'

the answer is c on e2020, bud.