there are  Is there someone who can help me with this tasks? (toefl integreted task)

Both an author and speaker talk about global warming and the effects of the rising of the temperatures because of the human activities such a resulting high levels of CO2.
The author explains that human activities had have influenced the global temperature which is has been rising in the last recent years. The earth is getting warmer, and it is has been discovered that there is a relationship between the rising of the temperatures and the rising level of carbon dioxide. For this reasons, there will be a lot of changes in our world. First, the weather will be conditioned from the different temperature. Secondly, some industry sectors could be affected, like agricultural and transportation sectors.
The speakers talks about the same subject, but he explains how this phenomena will influence the economy of tourism in the winter. He mentions how the temperatures are have been rising in the last recent years in the north-east of the USA and how it could bring to an economic disaster of for the skiing centre. The heat will decrease the days of snowing snow days in winter, and because of that the skiing centre will have less tourists and the necessity of using the will need to use artificial snow, which will increase the costs. Also hotels, restaurants, and other services in those areas will have less clients, this mean which means less revenues and more problems.

Note: highlighted sentence is a passive sentence, it is preferable to transform it to an active sentence by rearranging the word order and indicating WHO is doing the action; i.e. "so-and-so discovered that..."

Second highlight is unclear word usage.  What are you trying to say here?  You cannot say that weather will be "conditioned."  

Third highlight: centre is British English, center is American English (not sure which you are studying)