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.
1 Feeding can then be reduced to two times a day until six months of age. 2  You can offer your puppy his daily food allowance in two separate meals. 3  You can feed an adult diet from 14 months of age. 4  Since all puppies are individuals, some may need more and some less than the indicated amounts.