TLDR: The Earth's crust is made up of different elements, and this article shows how abundant each element is.
The Earth's crust is like the outer layer of a big pizza. It's the part we live on and it's made up of different elements, kind of like the toppings on a pizza. This article is all about how much of each element there is in the Earth's crust.
Scientists have figured out how much of each element there is by studying rocks and minerals from different parts of the world. They measure the amount of each element in the rocks and then calculate how much there is in the whole crust.
Some elements are really common in the crust, like oxygen and silicon. These elements make up a big chunk of the crust. Other elements, like gold and platinum, are really rare. They make up only a tiny fraction of the crust.
The article has a big table that shows the abundance of each element in the crust. It's kind of like a ranking of the elements, from most abundant to least abundant. Oxygen is the most abundant element, followed by silicon, aluminum, and iron. These elements are found in lots of rocks and minerals.
Some elements are really rare in the crust, like gold and platinum. They are found in very small amounts. But even though they are rare, they are still important because they have special properties that make them valuable.
The composition of the crust can vary depending on where you are. Different parts of the world have different types of rocks and minerals, so the abundance of elements can be different in different places.
So, in summary, the Earth's crust is made up of different elements, and this article shows how much of each element there is. Some elements are really common, while others are really rare. The composition of the crust can vary depending on where you are.