The rate of natural increase refers to the difference between the number of live births and the number of deaths occurring in a year, divided by the mid-year population of that year, multiplied by a factor (usually 1,000). It is equal to the difference between the crude birth rate and the crude death rate.
Questions assumes we have a book
Answer: nife ( Nickel and Iron)
Explanation:
The core is regarded as a very dense and hot (caused by decay of radioactive elements and planetary formation )center of the planet lying about 1,802 miles below Earth’s surface. The core majorly consists of two minerals which are Nickel and Iron (mostly as an alloy) the rest trace/ negligible minerals are sulphur and oxygen.