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.
When your puppyâs growth in height slows, you should begin switching to a premium adult-formula dog food. This usually occurs around 9 to 12 months for small breeds, around 12 months for medium breeds, and around 12 to 24 months for large breeds.ereâs a simple four-day guide to help make the switch as seamless as possible: 1  Day 1: Fill your dog's bowl with approximately 75% puppy food and 25% adult food.