Water & Nutrients. Like humans and animals, plants need both water and nutrients (food) to survive. Most all plants use water to carry moisture and nutrients back and forth between the roots and leaves. Water, as well as nutrients, is normally taken up through the roots from the soil.
Changing from puppy food to adult food depends on the size of your dog as an adult. If he is a small breed and will not exceed 30 pounds, he is mature at 10 to 12 months old. Some small breeds are mature before 10 months of age. Medium breeds are dogs that do not exceed 80 pounds at full growth.
I have a Jack Russell Terrier named Roscoe (go figure) and he was a rescue dog I obtained in November of 2008. He was about 7 weeks old at the time I adopted him from the local animal shelter. Now he is about nineteen months old. My questions is this: when does he become an adult dog and not a puppy anymore? I still feed him Puppy Chow twice a day - about 3/4 cup in the morning and 3/4 cup in the evening. He gets a treat of 1/2 of a can of Alpo wet food (which he loves) around 3:00 p.m. every afternoon.