Answer:
You have external defense systems, which include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria. The skin, nails and hair form the integumentary system, which stops dirt and pathogens from entering the body.
Answer:.Use of the GAH may increase the amount of hormones in the milk.
Explanation:The increased amount of hormones could cause unintended transmission of the genetically altered hormone or related hormones to be present in the milk.
I found the answer to be cells
4. Gene Pool is not a mechanism, thus your answer!