The center of the Earth is made up of two layers, the outer core and the inner core. The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. The outer core is responsible for Earth's magnetic field.
They came from <span>Scandinavia, Italy, Poland, and Russia. Hope that helps! :)</span>
We consume about 24% of the world's energy
Answer: Sustainability is important for a very simple, very straightforward reason: we cannot maintain our quality of life as human beings, the diversity of life on Earth, or Earth’s ecosystems unless we embrace it. There are indications from all quarters and from the smallest to the largest scale that sustainability is something we must address.
