Newly oxygenated red blood cells carry oxygen to your body. A pulse oximeter uses light to measure the oxygen saturation level, the percentage of hemoglobin in your red blood cells carrying oxygen. Normal oxygen saturation levels fall between 95 and 99 percent.f you're in good health, normal blood oxygen levels almost always fall within a very predictable range. Medical professionals use two primary measurements for determining your blood oxygen level: oxygen saturation and arterial oxygen. The normal values differ for these measurements.
What two metals are found in the inner and outer cores? Iron and nickel compose the bulk of the inner and outer core of the Earth. The bulk of the inner and outer cores, around 80%, are composed of iron. A substantial amount, aroun â¦ d 10%, is composed of nickel, and the remainder is a mixture of other elements.
Heavier elements like iron tend to sink toward the center or core of the earth. Lighter materials, the silicates, oxygen compounds and water have risen to become part of the crust. This action has created distinct layers within the earth and is still in process today. The Inner Earth is composed of three main parts; the crust, the mantle, and the core as shown in the diagram of the earth's interior below: The Crust - silicate rocks, primarily granite and basaltOceanic Crust - mostly basaltContinental Crust - igneous, metamorphic, and sedimentary rocks.