And then, by simply connecting a “ plug” to the plant stem(茎), the electricity produced can he harvested and used to power electronic devices. The researchers additionally describe for the first time how this
T he sun gives us as much energy every minute as mankind uses in a year. At present, we use this energy indirec Coal(煤) represents the chemical action of the sun on green plants thousands of years ago.Water power results from the rain formed by vapor when water changes into gas under...
Describe how vitamins differ from energy nutrients. What macromolecule is produced during photosynthesis for plant food? What is a macronutrient? Explain and give examples. Is glucose the only source of food energy? What are the bacteria using for nutrients in nutrient agar?
What type of energy is needed in photosynthesis? What is the by-product produced from photosynthesis? What are the reactants of photosynthesis? What are the reactants for photosynthesis? What do autotrophs do during photosynthesis? In plants, what is the stroma?
When plants die and are buried, some of the solar energy is stored in rocks, when we burn coal, oil, or natural gas, we release stored solar energy.The second most powerful source of energy, at 23 terawatts or 0.013 percent of the total, is geothermal energy, Earth’s internal heat ...
根据原文第1段The energy which the sun radiates(辐射) goes in every direction. But only a minute part of it falls on the earth可知,太阳向四面八方散发出能量,但是只有一小部分属于地球。短语a minute part of在句中意为“一小部分”,a minute可意为“一点点”,B选项符合题意,故选B。【小题2】...
The sun gives us as much energy every minute as mankind uses in a year. At present, we use this energy indirectly, and it is our final source of power.Coal represents the chemical action of the sun on green plants thousands of years ago.Water power results from the rain formed by ...
Nuclear fuel can be reprocessed at specialized recycling plants. The recovered uranium is called reprocessed uranium — it can be reused as a new type of fuel. What is depleted uranium (DU)? As we have seen in the chapter on enrichment, centrifuges produce uranium that contains a higher isot...
Pollen, a powdery substance, which is produced by flowering plants and contains male reproductive cells, is usually carried from plant to plant by insects or birds, but some plants rely on the wind to carry their pollen. Wind pollination is often seen as being primitive and wasteful in costly...
It captures the energy which plants produce during photosynthesis, a process of converting sunlight into energy. 2016年12月四级真题(第二套)听力 It's a pretty easy job, but one with lots of downtime, which means you will have plenty of time to catch up on reading, do homework or study ...