One possible version: The earth is becoming warmer because of human activities, especially the burning of carbon fossil fuels. (要点 1 ) All scientists accept that the levels of carbon dioxide have increased. (要点2) However, there are very different attitudes among scientists towards this rise...
It forms beneficial gases Climate change is the key criminal in the oper C. It reduces their living areas.ocean. Warming surface waters make it harder for oxygen to reach the inside of the ocean. Furthermore D. It produces more carbon dioxide.as the ocean as a whole gets warmer, it ...
Pollution, particularly in the form of carbon dioxide gas causes the atmosphere of the Earth to warm. The warmer atmosphere means that energy is... Learn more about this topic: Ocean Pollution | Causes, Effects & Prevention from Chapter 5/ Lesson 6 ...
believe that we should not worry about high levels of carbon dioxide in the air . They predict that any warming will be mild with few bad environmental consequences . In fact ,Hambley states ,"More carbon dioxide is actually a positive thing .It will make plants growquicker; crop...
At that time Mars would have been much warmer and wetter than it is today with an atmosphere composed mainly of carbon dioxide just like that of the earth at the time. Under these conditions it is highly probable that life may have arisen on Mars as well.But even if life did not arise...
on the Mars now,some scientists think there may have been some form of life a long time ago.At that time,the planet had active volcanoes(火山); the atmosphere was thicker and warmer; and there was water.In fact,in some ways the Mars may have been similar to the Earth,where life ...
crops will produce morerit will encourage a greater ranges of an-imals-all of which will make life for human beings better."Greenhouse gases continue to build up in the atmosphere.Even if^ we start reducing the amount of carbon dioxide and other green-house gases, the clinate is going to...
Calculating the Mass of Spheres Isaac Newton showed that, for spherical objects, you can make the simplifying assumption that all of the object's mass is concentrated at the center of the sphere. In the case of our planet, the center of the sphere would be Earth's center. The following...
any warming will bemildwith few bad environmentalconsequences. In fact, Hambleystates, "More carbon dioxide is actually a positive thing. It will make plants grow quicker; crops will produce more; it will encourage a greaterrangeof animals - all of which will make life for human beings better...
A. The forests are losing their function in turning carbon dioxide into oxygen. B. Many of our daily uses are related to the tropical forests. C. Tropical plants can be used to make industrial products. D. High carbon dioxide levels will make the earth warmer. ...