Gravity holds us firmly on the ground and also keeps the earth circling the sun. It draws rain from the sky and causes the tides. This mysterious gravity force continues to puzzle scientists even as it gives stability to the universe. How is gravity able to act across empty space, and why does it exist in the first place? Science has never been very successful in explaining such "natural" laws. After all, these universal rules cannot slowly arise by mutation or natural selection; they have been here since the very beginning. Gravity, as well as every other intricate physical law and constant, is actually an absolute testimony to creation (Vries, 15).
Humans have a few basic needs for survival. These include energy sources (food, plants, the Sun), nutrients, water, oxygen and a moderate temperature. Humans also need protection from poisonous gases and high levels of radiation. Food gives us energy. When we eat food, some components of food are broken down into sugar for energy. Our bodies use the sugar to make the energy we need to move and grow. Energy allows all of our organs to function, allows us to move, talk, run, think, breathe and do all of the things we do every moment. Food for humans is like electricity for a computer. Without electricity, a computer cannot do anything. Without energy, our bodies cannot do anything. We cannot gain our energy directly from the Sun, so we have to eat plants that gather their energy from the Sun. Animals also gain their energy from plants, so we can also gather energy by eating animals. Therefore, humans need plants and the Sun energy to survive. Nutrients from food build and mend our bones, teeth, nails, skin, hair, flesh and organs and allow us to grow. We need to have a well-balanced diet in order to have all of the nutrients that our body needs (Vincent, 1093).
