The pig heart is big,and the chicken heart is small.
Because it codes for specific proteins and contains the genetic instructions needed in order for an organism to survive, develop and reproduce
Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
Answer:
B.
Explanation:
whenever a organism grows the cells seperate to make up more room for the organism to keep growing until adulthood to elderly-hood
