Global warming in the Antarctic glaciers melt faster, sea level will rise rapidly, life on earth will have one's head above water. I told grandpa, this is too much carbon emissions. When the Spring Festival, we do not have as they often buy a lot of fireworks, fireworks set off once ...
Carbon dioxide is a colorless gas that exists in our atmosphere. It is a naturally-occurring compound composed of one carbon atom and two oxygen atoms.
are predominantly water vapor, carbon dioxide, and sulfur dioxide.These gases should therefore have been important parts of the original atmospheres of both Venus and Earth.Much of the water on both planets is also thought to have come from impacts from comets, icy bodies formed in the outer ...
Languagepoints 1.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.[考点]what引导的主语从句，第一句what在从句中作become的宾语，第二句what在从句中作主语。[考例1]___wasmostimp...
The densities of the terrestrial planets average about 5 times the density of water, whereas the Jovian planets have densities that average only 1.5 times the density of water. One of the outer planets, Saturn, has a density of only 0.7 that of water, which means that Saturn would float ...
6.Do you want to live on other planets? 例一:Do you like to look at the sky? Why? 分析:此话题可以说说天空的美丽之处,描述天空的颜色以及个人的感受,在看天空时的想法和感受 Yeah, I love looking at the blue sky, especiallyon the coolbreezyautumndays.The beauty of the sky issimplyspectacul...
are predominantly water vapor, carbon dioxide, and sulfur dioxide. These gases should therefore have been important parts of the original atmospheres of both Venus and Earth. Much of the water on both planets is also thought to have come from impacts from comets, icy bodies formed in the outer...
[#paragraph2]Venus and Earth are commonly regarded as twin planets but not identical twins. They are about the same size, are composed of roughly the same mix of materials, and may have been comparably endowed at their beginning with carbon dioxide and water. However, the twins evolved differ...
Which terrestrial planets have mostly carbon dioxide atmospheres? What planets have a magnetosphere? If the earth had no atmosphere, what would the average temperature of the planet be? How many moons does Eris have? What is the outermost part of the sun?s atmosphere called?
Unmanned probes to other planets have beamed back pictures of varied and distinctive worlds.I hope that by 2050 the entire solar system will have been explored and mapped by flotillas of tiny robotic craft. Robots and "fabricators" may enable large construction projects, using raw materials that ...