It comes from methane in their clouds
That statement is true I think. not for sure.
Answer:
Vegetation cover.
Explanation:
Planting vegetation over the mined area is the best solution that provide the largest benefits to society and the environment with low cost as compared to other solutions for reclamation such as refilling the land with soil and filled water to make a lake. Vegetation over mined area clean the environment as well as provides timber in few years which is used for making different products. So vegetation is the best solution for reclamation of mined area.
Explanation:
Given the importance of oxygen for animals, researchers suspected that a sudden increase in the gas to near-modern levels in the ocean could have spurred the Cambrian explosion. ... This supported the idea of oxygen as a key trigger for the evolutionary explosion.
I think you wanted to know whether the statement in question is true or false. Based on this assumption, i am answering the question. It is a true fact that the Danube River is navigable and thus connects many of the countries of the European continent. I hope that the answer has come to your help.
