Peppermint and peppermint oil are LIKELY SAFE when taken by mouth in amounts commonly found in food, when taken in medicinal amounts, or when applied to the skin. The leaf is POSSIBLY SAFE when taken in amounts used for medicine short-term (up to 8 weeks). The safety of using peppermint leaf long-term is unknown.
Itâs clear that in order to have the current balance of elements that Earth has further up, the core must be 85 percent iron and 10 percent nickel. That has meant that 5 percent of it has remained up for grabs, so to speak, to anyone who can come up with a convincing enough theory.
The Earth's inner core is made up of iron and nickel, just like the outer core, however, the inner core is different. The inner core is so deep within the earth that it's under immense pressure. So much pressure that, even though it is so hot, it is solid.