The text talks about the elements. Which element is the most abundant in the Earth's crust? A. Oxygen B. Silicon C. Aluminum D. Iron 相关知识点: 试题来源: 解析 A。解析:氧是地壳中含量最丰富的元素。硅、铝和铁的含量都不如氧多。
The Earth has an atmosphere.Which gas is the most abundant in the Earth's atmosphere? A. Oxygen. B. Nitrogen. C. Carbon dioxide. D. Hydrogen. 相关知识点: 试题来源: 解析 B。本题考查地球大气的组成。氮气是地球大气中含量最多的气体;氧气次之;二氧化碳和氢气含量很少。
Hydrogen, one of Earth’s most abundant elements, once was seen as green energy’s answer to the petrol-driven car. Hydrogen energy was defeated by a mountain of obstacles — the fear of explosion, the difficulty of carrying it, heavy tanks, and the lack of a refueling network. But hydro...
The Universe The Most Abundant Element in the Universe Planets and Elements The Most Common Element on Earth Lesson Summary Frequently Asked Questions What are the 10 most common elements on earth? The most common elements on Earth are a mixture of gasses, metalloids, and metals. These include...
Calcium, Ca, is the most abundant alkaline earth element in the Earth's crust and makes up approximately3.6 percentof the earth's crust. This fifth most abundant element in the earth's crust is a reactive element that readily forms compounds with oxygen and water and is not found free in...
Jeanna Bryner
Hydrogen is the most abundant element on earth. And because hydrogen fuel is versatile and produces no emissions at point-of-use (only water vapor), hydrogen can play a big role helping society meet its net-zero goals.Our planned hydrogen facility in Bay
About eight percent of the Earth's crust is aluminum, making it the most abundant metal on this planet. However, it is always found combined with various other elements, never by itself in a pure state. Two of the most frequently encountered aluminum compounds are alum and aluminum oxide. ...
解析 D abundant这里意为“丰富的”,这与plentiful意思一致,故D为正确答案。ample和adequate都强调的是“充足”,并不是“丰富”。multiple意为“多种多样的”。结果一 题目 Water is one of the most {{U}}abundant{{/U}} but also one of the most wanted substances on Earth. A.ampleB.multipleC....
a郏青: pls belive my love to u , sometimes it is little difficult for me to explain things in a better way 正在翻译,请等待...[translate] aIron, one of the most abundant metals on Earth, is essential to most life forms and to normal human physiology. Iron is an integral part of man...