We can answer all your questions so that you have the healthiest humidity level in your home, office or classroom that will help ease your allergy and asthma symptoms. When the humidity level is too high, it can cause problems and the same can be said about a low humidity level.
What the earth layers are: RED â inner core ORANGE â outer core YELLOW â mantle BLACK â crust BLUE AND GREEN â land and water.
The outer core consists of hot lava that is comprised mostly of iron and nickel. This layer is so hot that all metals in it are in a liquid state. Iron and nickel are common metals found across the planet, and these metals exist in solid form on the Earth's surface. In the outer core, they form an alloy.