Blood makes up about 7% of your body’s weight. One out of every 10 people admitted in a hospital needs blood. Human blood consists of about 22 percent solids and 78 percent water. Giving blood will not decrease your strength. The kidneys filter over 400 gallons of blood each day. …
Lung Facts The primary functions of your lungs are to transport oxygen from the air you breathe into your bloodstream while taking away carbon dioxide, which is released into the air when you breathe out. Most vertebrate animals (animals with spines) have two lungs. Your left and right lungs aren’t …
The Moon is our closest neighbor in space. It is a rocky, airless world that orbits Earth. The Moon is Earth’s only natural satellite. Most of the other planets in our solar system also have moons. Many astronomers think that the Moon was formed after a Mars-sized object smashed into …
Soil influences many areas of our lives. It is an integral part of our ecosystem. The composition of the soil in an area has a direct effect on the plant and animal life there. It takes more than 500 years to form 2 centimeters of topsoil. Ten tonnes of topsoil …