All of human history has depended on this little microbe for the oxygen they breathe every day, no matter where or when they lived. 整个人类历史都依赖这个小微生物,为人类提供每天呼吸的氧气,无论何时何地。 And we've only been aware of that relationship for a mere 24 years. 而我们知道这层...
The evolution and expansion of land plants brought about one of the most dramatic shifts in the history of the Earth system — the birth of modern soils — and likely stimulated massive changes in marine biogeochemistry and climate. Multiple marine extin
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Finally, in addition to direct attacks on weeds, how you plant your garden can indirectly influence weed growth. For example, close spacing of plants in the garden blocks sunlight from reaching the ground and can limit weed growth. And using a watering method known as drip irrigation will dire...
They are known for their love of nuts(坚果), and they can eat as much food as their body weight each week. They will often keep nuts in the ground for the long winter months. Many people think that squirrels only eat nuts, but this isn’t true. They also like to eat plants, ...
The Influence of Sea Power upon History. 1660-1783. [With maps and plans.] "An unabridged, slightly altered republication of the fifth edition (1894) of the work originally published by Little, Brown, and Company, Boston, in 1890"... AT Mahan - Little, Brown, and Company, 被引量: 28...
enable it to swim forward, similar to a squid (乌贼). A plate holds a waterproof component that can house a camera to record data, which is of great value to further development of the robot. It also has its own power source, allowing it to float autonomously for long periods of time...
The ocean is the source of life on Earth and also our common home for humanity. Lets work together to protect the heart of this blue planet - the ocean. Only in this way can we ensure the ecological balance of the earth and leave a beautiful home for future generations. ...
However, although CO2-EOR has been developed in the USA for nearly 40 years, it still contains inherent drawbacks, which have not been solved well until now. For instance, due to the high costs of carbon dioxide capture and transportation in fired power plants, oil field companies consequently...
We humans produce a lot of waste… And no matter where we live in the world, not all of it is managed correctly. Huge quantities of waste find their way (or are actually dumped!) into our oceans where they can be potentially deadly to the plants and creatures living in them....