Okay kiddo, let's start by talking about what "biochemical predestination" means.
Our body is made up of tiny units called cells. These cells carry out different functions in our body, like helping us digest food or allowing us to see. Each cell has certain traits that make it unique and help it do its job. These traits are determined by something called our genes, which are like our body's instruction manual.
Now, "biochemical predestination" means that the traits of our cells are determined not only by our genes, but also by the chemicals and molecules that are naturally present in our body. So, our body is predestined to behave and function in a certain way based on the combination of our genes and the chemicals in our body.
Let's say you have a gene that makes you taller than most people. This gene will give you the instruction to grow taller, but it's not the only factor that determines your height. Other factors like the nutrients you get from food and the hormones in your body can also affect how tall you grow. So, biochemical predestination is like all of these different factors working together to determine your traits and how your body functions.
Overall, biochemical predestination is a complex process that is influenced by many different factors in our body. But, it basically means that our body is uniquely programmed to behave in a certain way based on our genes and the chemicals in our body.