Answer: B
Explanation:
Evolution is a process of elimination. the traits that are successful and help them survive are kept for the next population, because they are abet o survive to repopulate. So its improvement.
Chromosomes are made up of two sister chromatids , and are then dispersed as chromatin which is the DNA making up the chromosome.
carbohydrates is the answer
Answer:
urinary bladder does not help in reproduction
