A. Mostly liquid B. Mostly vapor C. Mostly ice D. There was no water at all 相关知识点: 试题来源: 解析 B。解析:早期地球温度很高,水在这种高温环境下大多以水蒸气的形式存在。A选项在早期高温下不可能大多为液态。C选项早期地球温度高,不可能大多为冰。D选项根据科学研究,早期地球是有水存在的,只...
What layer of the Earth is liquid? Earth's Layers: The Earth has four primary layers: crust, mantle, outer core, and inner core. We live on the crust, which is by far the coldest and by far the smallest of all of the planet's layers. ...
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Crude oil is a naturally occurring liquid petroleum product composed of hydrocarbon deposits and other organic materials formed from the remains of animals and plants that lived millions of years ago. These organisms were covered by layers of sand, silt, and rock, subject to heat and pressure, a...
The interdisciplinary subject not only provides insight into the mechanics of the solid parts of the planet, but also illustrates the inner workings of the liquid and gaseous portions. It addresses questions about the origins and evolution of the atmosphere, various land formations and bodies of ...
Water is found in all three states on Earth which are gas, liquid, and solid. As gas, water is found as water vapor in the atmosphere. In liquid form water is found in streams, rivers, lakes, ponds, and oceans along with mist in the air and as dew on the surface of the ground....
Tardigrades don't live in or on humans, and they are not dangerous to us. What do tardigrades eat? Most tardigrades suck fluids from cells in plants, algae and fungus. They use needle-like structures in their mouths to pierce cell walls and vacuum up the liquid inside. However, some...
Another practical application of centripetal force is the laboratory centrifuge, which is used to accelerate liquid suspensions. Centrifuges are key toolsused in blood sample analysis. Normally, thermal motion causes continuous mixing, which prevents gravity from forcing blood cells to settle out into ...
While driving through fog recently, I tried to recall what fog really is and why it occurs. There are varying forms of water, such as liquid, solid and gas, b
Knowing what water looks like on radar, scientists believe they found it underneath those ice caps — a mile beneath Mars’s surface. High salt content can keep the water liquid even at -90 degrees Fahrenheit, and NASA’sresearchsuggests Mars once had more water than the ...