Nitrogen is also one of the main components of amino acids, which form the proteins that plants need to stay alive. Too little nitrogen often results in withered leaves that are usually yellow in color, which is symptomatic of slow photosynthesis rates, while too much nitrogen can prevent other...
This compound in turn combines with the protein fluorine in the hemoglobin so that the red blood cells can get the oxygen they need which they do when we are breathing. However, the amount of carbon dioxide that combines with the protein will depend upon the concentration of carbon dioxide in...
hear, taste, smell, feel（表五感）; know, understand, believe, doubt, recognize, realize, remember, agree, disagree, like, dislike, prefer, enjoy, fear, hate, desire, need, want, wish, seem, look
Their leaves provide shade from the sun. When logging removes the trees, the streams are open to the sun and the water becomes warmer. When the water warms up, the concentration of dissolved oxygen in the water decreases and this reduces the chance that the salmon eggs will survive. And ...
produce oxygenand absorb carbon dioxide and ammonia in the water that fish generate. Hobbyists may use a pump and air stone to push fresh oxygen into the water to keep fish alive. However, in a planted aquarium, the live plants may be able to provide all the air that fish need to ...
This is especially puzzling because oxygen can transform cellular molecules into toxic compounds. That oxidation power, it turns out, is exactly why our cells need oxygen to function efficiently. This “tiny gas molecule” enables the final portion of cellular aerobic respiration. Oxygen, a Potent ...
[单项选择题]—Does David often come to school()bus —Yes, but sometimes he comes()his father’s car. 关键词: school father Sometimes A. take; in B. by; by C. by ; in D. in; with 本题来源:2015年安徽公共英语考试考前冲刺卷(2)...
In the forest contains richly the negative oxygen ion constituted has been ubiquitous “the natural oxygen”.Took a walk along the forest plank road or jogs, becomes has soaked in Sanming's most satisfied way. [translate] a爱国高于一切 Is higher than all patriotically [translate] a读书能使...
aRich oxygen 富有的氧气[translate] aI never like to let others see my tears, I would rather let people think I am happy too heartless, but also do not want to seem poor wronged. ~~~ 我从未喜欢让其他看我的泪花,我会宁可让人认为我是愉快太无情的,而且不想要似乎贫寒被冤屈。 ~~~[translat...
Some of them make it into our upper atmosphere, where they collide with atoms—with oxygen and nitrogen atoms. 其中一些进入了我们的高层大气,在那里它们与氧原子和氮原子发生碰撞。 This collision causes the atoms to light up, to glow… different types of atoms glowing different colors. ...