Answer:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
Explanation:
The monomer is nucleotides
Answer: Heredity
Explanation: organisms can reproduce only their own kind due to heredity. Heredity is the transmsion of traits and characters from a parent to its offspring through what is known as gene(a unit of heredity carried by chromosomes of cells)
Now that takes us to the second part of the question,
Traits of the parents are carried in a form of 'genetic information' and passed-on to the offspring thereby making them have a unique resemblance of their parents compared to the other individuals.
