Why is the Earth called a "blue planet"? A. Because it has a lot of blue flowers. B. Because most of its surface is covered by water. C. Because the sky is always blue. D. Because people like the color blue. 相
the earth has just the right temperature. As the third planet from the sun, the earth seems to be just the right distance away. 和第二段中的 The plants created oxygen in the atmosphere. Oxygen is the gas that humans and animals breathe. 可知,地 球是可证实的唯一有生命存在的太阳系行星,...
Why Is Planet Earth On Life Support? - Waking Timesfeatured
Earth's crust is the planet's outermost layer. It is made of solid rock and sits on top of another layer, called the mantle. The mantle flows and stretches like bubble gum, while the crust above it cracks like hard candy. When it does, it releases energy in a burst, which causes th...
That said, it is still considered to be one of the largest bodies in theKuiper Belt. Because Pluto is the biggest object in this region, some call it“King of the Kuiper Belt.” Size is relative, perhaps. Pluto—smaller than Earth’s Moon—is about 1,400 miles (2,380 km) wide. ...
For on e thing, th e earth is just th e r ight temperatur e. As th e thir d planet from th e sun,th e earth seems to b e just th e right distanc e away.T h e planets which ar e closer to th e sun ar e hot that their surfaces bak e in th e sun. T h e farthest...
【题目】阅读理解T h e earth is th e only planet that scientist s think has life. Why does th e earth hav e life whil e th e other planets (行星) don't? For one thing th e earth is just th e right temperature As th e third planet from th e sun, th e earth,s eems to b...
Earth Day is on April 22nd.People say thanks to the Earth and learn ways to keep the Earth safe and clean.But saving the Earth is not just for grow-ups.Kids are also taking an active part in it.The American writer and filmmaker Lynne made a film called Young Voices for the Planet.It...
battered craters and signs of liquid flowing upon its surface all point to a world that underwent massive geological change since its formation. On this basis alone, people like Stern have said, Pluto should be considered a planet since it is a dynamic place, a place that is not so static...
We don’t know whether Earth is the only inhabited planet. It is possible that there is life elsewhere in the universe. Whether such life-forms have spiritual, rational souls subject to the need for salvation would be an entirely different question that the Church then would have to ponder....