Answer:
This is False
Step-by-step explanation:
The Earth is the third planet from the sun. It has a mass of 5.972 × 10^24 kg.
About 90 percent of the mass of the Earth is composed of elements and compounds such as iron–nickel alloy (95% iron) in the core (30%), and the silicon dioxides (c. 33%) and magnesium oxide (c. 27%) in the mantle and crust.Diamond doesn’t account for three-quarters of the planet’s mass.