Compréhension de texte.

Sujet du devoir

The Caribbean, known for its crystal blue waters, powdery sand beaches with colors ranging from coco to pink and all the shades in between, is a haven for holiday seekers looking for an exotic getaway for their holidays.
In recent years, the Caribbean has become more accessible from various locations around the world--more flights operating in and out of islands, which until recently had been virtually untouched.
The need for accommodations has skyrocketed. Islands that may have been overlooked before are now getting the much needed tourism dollars fed to their economy.
But you have to put people somewhere, right? So, what this has meant for islands in desperate need for tourism dollars, a demand for lodging.
When building a hotel, what is needed? Lumber, electrical, plumbing, roofing materials and plastering for walls, pools, and cement flooring. The addition of sand needed as an integral part to make cement materials, is what is creating the not so new business of sand stealing.
Literally, truckloads of sand from islands such as Grenada, Jamaica, the tiny isle of Nevis, and Anguilla have all felt the effects of this enterprise in the Caribbean.
Although illegal sand mining stared in the 1970's on various isles in the Caribbean, the amounts were small, with not much impact. Today those amounts have more than quadrupled. A report coming out of Jamaica, for example, states that thieves stole more than 100 truckloads from private beaches to build a mega-resort for tourists. That's just one resort.
It's all about locals making a profit, with sand selling around $350.00 a cubic yard, and hotels saving money without having to import the same materials at a higher cost.[...]
Environmentally speaking, it means locations around the islands are now subjected to potential flooding, tidal waves, ripping winds, rough seas, and loss of eco-sensitive plants and animals.[...]

1)What makes the Caribbean Islands so attractive to tourists ?
2)What makes it easier for them to go there theses days ?
3)What is meant by "virtually untouched" ?
4)What neeh has been created ?
5)How the local population is (or is not)in some way responsible for what has been happening.
6)What illegal sand mining consists of ?
7)What serious problem this creates and what dangers now threaten the population.

Où j'en suis dans mon devoir

Je dois répondre aux questions suivantes mais je ne comprends rien au texte enfin je sais juste que sa parle de sable illégal ? :S