Why are models in science used to represent complex processes?

Tessa’s friend milo offers her a ride home. tessa does not like riding with milo. he insists that everyone wear a seat belt, and he listens to classical music. he drives a small car, and usually texts while driving. why should tessa refuse milo’s offer? milo texts while driving. milo listens to classical music. milo drives a small car. milo insists that everyone wear a seat belt.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Is it rare to have scoliosis and double jointed shoulders?