A. What’s the right way to raise fish in a new tank? B. What happens during the Nitrogen Cycle? C. Why are fish in a new tank likely to die? D. Why is nitrate less harmful to fish? 相关知识点: 试题来源: 解析 D 答案:D 解析:推理推断题。文章第一段介绍了养鱼新手常遇到的问...
What usually happens when diphosphorous pentoxide is formed? Explain what is Gaseous exchange and why is it done and where does it occur? What are the parts of the cell cycle and what happens in each of those parts? Can heat be lost in a chemical reaction? How to balance...
Image Map of the Nitrogen Cycle Mouseover the words to learn more
reproduces itself to form a large enough area to change all ammonia into nitrite.As the concentration(浓度) of nitrite increases,the same thing happens to nitrite,which happened to ammonia.A group of bacteria that change nitrite into nitrate(硝酸盐) form in large numbers.The cycle takes about...
Ammonification is the process of converting nitrogen containing molecules in organisms back into ammonia. This happens when organisms die and... Learn more about this topic: Ammonification: Definition & Nitrogen Cycle from Chapter 3/ Lesson 30 ...
2-7 What happens to matter in an ecosystem? Major recycles in ecosystems are the nutrient cycle,the hydrologic cycle, the carbon cycle, the nitrogen cycle, the phosphoruscycle, and the rock cycle. The carbon cycle produces carbon dioxide, and withmore of it being released into the atmosphere...
In N2 and N3, foliar δ15N increased during the N-loading phase, but declined during the recovery phase, indicating a return of ectomycorrhizal fungi and their role in tightening the N cycle in N-limited forests. In the terminated, initially highest N treatments, N2 and N3, the trees even...
What happens when hydrogen reacts uncontrollably with oxygen? As many people know from chemistry class: an oxyhydrogen reaction occurs. This means hydrogen is flammable. To prevent hydrogen and oxygen reacting out of control during operation of a fuel cell car, the hydrogen in the vehicle is sto...
Abnormal tumor microenvironment and immune escape in multiple myeloma (MM) are associated with regulatory T cells (Tregs), which play an important role in maintaining self-tolerance and regulating the overall immune response to infection or tumor cells.
What happens to our heat-trapping fossil fuel emissions after we release them, how long will they persist, and what might life be like in a warming - and then cooling - world? AaAaAa Until recently, most discussions of modern global warming have looked only as far ahead as 2100 AD. Now...