Q. If God created all living things as newborn babies, how many of them would survive.
A. Very few.
Most babies need an adult mother to help them survive until they can fend for themselves. Man is no exception. If you've ever looked around, you might have noticed that the world is populated by adults and children who are becomming adults. The role of children is to grow into adults. The role of adults is to raise their families and serve God.
A simple reading of Genesis will reveal that everything God created was in its mature state, including trees bearing fruit and not seedlings in the dirt. Maturity, then, was part of the design. Adam was a mature adult, the animals were created in their maturiy, the trees were created in their maturity and the planet was created in its maturity. To the ignorant, this may seem like God is intending to decieve us. Actually, I think He intends for us to read His Word. The question of the appearance of age is quite easily answered when you read about the creation and all things being created in their mature state. It doesn't take a rocket scientist to comprehend that if everything else was created in its mature state then the Earth was as well.