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.
The Earth's inner core is the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 70% of the Moon's radius.[1][2] It is composed of an ironânickel alloy and some light elements. The temperature at the inner core's surface is approximately 5,700 K (5,430 Â°C), which is about the temperature at the surface of the Sun.