第一个是do，表示复数。第二个是does，ftw and btw是一个意思，还有改一个错：what does ftw and btw mean?这是主谓一致的问题，很复杂，这里讲几点：（一）语法一致原则 用作主语的名词词组中心词和谓语动词在单、复数形式上的一致，就是语法一致。也就是说，如果名词中心词是单数，动词用单数形...
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Forests help to keep water from running away,so drought(干旱) does not often happen.The trees in the forests can keep rain drops from hitting the soil directly,so the soil is not easily washed away.The dead leaves on the ground can also keep the water from running away.The water then ...
The Great Lakes: The Great Lakes are a series of five interconnected freshwater bodies found in the United States of America and Canada. They are lake, Superior, Michigan, Huron, Ontario and Erie. Answer and Explanation:1 The water in the Great Lakes comes mainly from snowfall in the Canadia...
In this article, you'll learn how a humidifier can help make things more comfortable and even save a little wear and tear on your house by adding moisture to the dry indoor air. It's surprising how big a difference a little water can make!
The efficiency of this all depends on how long biochar remains in its charcoal form. People have suggested it is very stable and will last thousands of years but there is almost no science to prove this. Areport from the Earth Island Institutesays, “Field trails proved rare; only five suc...
Lava is molten rock which is present at the surface of the earth. When molten rock is still below the earth's surface it is referred to as magma. Magma gets ejected to the surface of the earth in events known as volcanic eruptions. ...
Earth? It might be better called Oceanus: most of it is, after all, covered in water—much of it very warm water. The really interesting thing about the ocean is not how hot it is, but the difference in temperature between the surface (where the Sun keeps the sea relatively hot) and...
Salt is a natural mineral on Earth. In this lesson, you will learn what salt is, where it comes from, the healthy amount of salt that you need, and what foods contain salt. Continue reading to learn interesting facts about salt.
In the 1930s, British botanist Arthur Tansley introduced the term ecosystem to describe a community of organisms interacting with each other and their environments: air, water, earth, etc.1In order to thrive, these organisms compete and collaborate with each other on available resources, co-evolve...