What happens is that a certain amount of heat energy is required to convert liquid water into vapor. So when water evaporates from the ocean, it takes energy to convert that water into a gaseous form, into water vapor. But that heat energy, that conversion energy, doesn't raise the temper...
F.But many of them are small enough to be around us without being seen. 答案细节推理题。(1)根据后句It's in our food and drinks,in the clothes we wear and even in the air we breathe.(它存在于我们的食物和饮料中,存在于我们穿的衣服中,甚至存在于我们呼吸的空气中。)...
There are two types of plastic forming: Cold-plastic forming, which is performed at ambient temperatures, and hot-plastic forming, which uses heat. When heated, metal undergoes thermal expansion and changes shape. As such, cold-plastic forming is used whenever possible, and hot-plastic forming ...
When various elements are heated in a fire, their electrons absorb energy and jump to higher energy levels. As these excited electrons return to their lower energy states, they emit light at specific wavelengths, which correspond to different colors visible to the human eye. The color and intens...
解答一 举报 1答案是D.Suchsuch was her cruelty that we all hated her.这是such.that.句型本句是倒装句原句意思=she was such a cruel girl that we all hated her.或she was so cruel that we all hated her.如果选A 可以是it... 解析看不懂?免费查看同类题视频解析查看解答 更多答案(3) ...
"The features are mineralized remains of what appear to be bacteria that lived some 3.77 billion to 4.28 billion years ago," the scientist said. That would be older than some other rock features found in Greenland, which were considered to be the fossils last August. ...
what happens, God’s peace, love, and acceptance is here. I must somehow search that out even in the cold, even in the physical ailments, even in the angry world. It is natural and human that I am distracted by these worldly negative experiences, but when I can see through them and ...
Chemical reactions involve the interaction of atoms' electron clouds... Learn more about this topic: Basic Properties of Chemical Reactions from Chapter 2/ Lesson 14 71K Chemical reactions, when molecules interact to create new substances, can be written as equations. Learn more about the basic...
There are two groups of sugars, monosaccharides and disaccharides; longer chains of sugar molecules like starch and cellulose are not considered to be sugars and are usually called polysaccharides. Sugars are used to store chemical energy and are largely produced by plants and then consumed as food...
Proteins composed of amino acids that interact with each other to hold the protein in a three-dimensional shape. Enzymes are a class of proteins that change the speed of biochemical reactions. Every protein or enzyme has a native shape it needs to perfor