Answer:
You, a human being and a pet share a mutualistic relationship. A mutualistic relationship is a relationship in which two different species of organisms benefit each other. You and your pet have a mutualistic relationship because a pet provides companionship, comfort, in some cases protection (depending on the pet), and protecting your home from rodents (also depending on the pet). While animals provide these services for humans, in return we provide food, water, shelter, and love/comfort for the animal. Both organisms (you and your pet) benefit from your relationship therefore it is mutualistic.
Adenine can't go with it because adenine can only go with thymine so it prevents it so it can go the right way
The answer would be a,b and c statements are all true. Billie cannot have the cow's milk as cow's milk has high contents of protein and minerals such as calcium and phosphorus. It also does have fat content and in addition does not have enough vitamin C and iron for infants.