解析 A. 1% of the world's water. 地球上的水资源主要分为淡水和咸水,其中淡水仅占地球总水量的3%。然而,大部分淡水以冰川和永久雪被的形式存在,难以直接利用。因此,人类可以直接使用的淡水资源仅占地球总水量的约1%。 所以答案为 A. 1% of the world's water....
Before,I love the fireworks ,now I will try to put it less. I also love to play in the water when I was having a buth,and i waste a lot of water ,but now,I must save water.Environmental protection starts from me start from the little things around us .For example we driving. l...
How much oxygen is in the Earth's crust? How much oil is in the Permian Basin? How did the Great Artesian Basin form? What is groundwater in the water cycle? How fast does most groundwater move in aquifers? How was the Great Artesian Basin formed?
根据文中“She said that she loved him as much as she loved salt. Her answer made the king very happy.” 她说她爱他就像爱盐一样。她的回答使国王非常高兴。可知,故答案为The king felt very happy.【小题5】细节理解题。根据文中“But for many years, salt’s most important job was to ...
Some of today's maps also rely on physical measurements taken by real people. Surveyors use instruments to take precise measurements of land and water, as well as the positions of man-made features. This information is vital to accurate topographic maps. Similarly, geological maps also rely on...
bucket in the sink and then turned the water in the water and the water ran down. But my mother was so busy with the dishes that she didnt turn off the water. At this moment, the small army saw, hurriedly ran to the mother to say: mother, mother, quickly turn off the water ...
How to protect water英语作文 1 As we know water is very important to us. There wont be lives on the earth without water. However there are more and more factories around us and some of them poured waste water into the rivers. They made the rivers dirty and lots of fish died. Therefore...
The frogs came out 4 because their stomachs were full of water, which they had stored n their sleep. The Rainbow Serpent tickled (痒 ) the frogs and when they_ 5_, water flowed all over Earth and that is how lakes and rivers were 67there was water, all the animals woke up, and ...
. Thanks toRosetta and Philae, scientists discovered that the ratio of heavy water (water made from deuterium) to “regular” water (made from regular old hydrogen) on comets was different than that on Earth, suggesting that, at most, 10% of Earth’s water could have originated on a ...
Mariner 9, in 1972, was the first to take photographs of the entire surface of Mars. Orbiting missions have continued, including the 2005 launch of the Mars Reconnaissance Orbiter. The orbiter could spot objects as small as a dinner plate, while also carrying sounders to find subsurface water...