Answer:
integumentary, muscular, skeletal, nervous, circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive
Explanation:
Been doing this for a while
Explanation:
1. they are convenient to use 2. it helps the international tade 3. it eases the exchange of material
Answer:
A.
Explanation:
Because the trait undergoes a secondary loss; it has been there but it doesn't always appear in all generations.
