Everything in Brazil seems larger than life. It has the world’s wildest party, etc………forest and one of the most unique and diverse cultures on the planet. (New Paragraph)

For travelers, ….can be overwhelming and dangerous …and move the last sentence of your explanation of “Tourist Police to the end of this sentence.

Brazil’s problems of poverty, crime and environmental recklessness can can seem larger than life, too. Next sentence Although it is one it is one of the industrial powerhouses in South America, Brazil has trouble feeding its people.

And deforestation of the Amazon Basin….

Excellent start, but be sure you take each point and explain in detail what you mean – world’s wildest part, etc.

Good luck and hope I didn’t confuse you!

Brazil’s problems– poverty, crime, and environmental recklessness-can also seem larger than life. Although it is one of the industrial powerhouses of South America, Brazil has trouble feeding its entire population. And deforestation of the Amazon basin proceeds at an ominous rate. But, in fits and starts, (** “fits and starts” is a good expression for the idea you are suggesting, but hardly seems something a student would say). How about : The country is gradually but successfully taking on some of its seemingly insoluble problems. Most noticeably, improvement is being made in the dangerous crime situation in Rio; a special branch of “Tourist Police” now keep tourist sites-particularly the beaches of Zona Sul-relatively safe.

(notice the change of subject/verb agreement in last sentence: branch keeps)

I think that this may be a good beginning, but it would be easier to assess if you had included the title of your essay. I do not how many areas you intend to introduce in it, and they all require some mention in your introductory paragraph.