Review 4

Some people mistake any form of nature travel as ecotourism.

1. Any form of nature travel is sometimes mistaken as ecotourism.
2. Ecotourism can be sometimes mistaken for any form of nature travel.
3. Ecotourism can be sometimes mistaken as any form of nature travel.
4. Ecotourism is, to some people, mistaken as any form of nature travel.

If those areas are damaged or destroyed, they will not be available to future generations.

1. Unless those areas are not damaged or destroyed, they will be available to future generations.
2. Because those areas are damaged or destroyed, they will not be available to future generations.
3. To keep them available to future generations, those areas must not be damaged or destroyed.
4. If damaged or destroyed, those areas will not be available to future generations any longer.

Our aim is to provide tourists with the principles of ecotourism throughout their trip.

1. Tourists provide us with the principles of ecotourism throughout their trip.
2. We aim at providing the principles of ecotourism for tourists throughout their trip.
3. We provide ourselves with the principles of ecotourism through our trip.
4. We need more information about the principles of ecotourism for our trip.

It is compulsory for the tourists to learn about the vital eco-systems before arriving.

1. Tourists are free to learn about the vital eco-systems before arriving.
2. It is optional for tourists to learn about the vital eco-systems before arriving.
3. Tourists are not required to learn about the vital eco-systems before arriving.
4. Tourists are required to learn about the vital eco-systems before arriving.

Eco-travellers have to prevent or minimize any negative impacts on the environment.

1. Eco-travellers are not required to protect the environment.
2. Eco-travellers are encouraged not to have any negative impacts on the environment.
3. It is eco-travellers' responsibility to prevent or minimize any negative impacts on the environment.
4. Eco-travellers have never had any negative impacts on the environment.

If you weren't so negative, you would be able to see all the advantages of global warming.

1. If you were an optimist, you would be able to the all the advantages of global warming.
2. Global warming has a lot of advantages if you see it from a positive viewpoint.
3. Seeing global warming from a negative viewpoint, you would see its advantages.
4. If you wear a negative attitude towards global warming, you will see all of its advantages.

Ecotourism can support conservation and environmental management if properly carried out.

1. As ecotourism is properly carried out, it can support conservation and environmental management.
2. In order for ecotourism to support conservation and environment management, it is properly carried out.
3. Only when properly carried out can ecotourism support conservation and environmental management.
4. Supporting conservation and environmental management, ecotourism is properly carried out.

If we did not use alternative sources of energy more, we would destroy the planet.

1. Using alternative sources of energy more will mean saving the planet.
2. The planet would be destroyed if we stopped using alternative sources of energy.
3. If no more alternative sources of energy are used, the planet will be destroyed.
4. Not using alternative sources of energy more will destroy the planet.

You should choose your travel provider on the basis of their eco principles and practices before you go.

1. You are advised to choose your travel provider on the basis of their eco principles and practices before your departure.
2. You are obliged to choose your travel provider on the basis of their eco principles and practices before your departure.
3. You are required to choose your travel provider on the basis of their eco principles and practices before your departure.
4. You have to choose your travel provider on the basis of their eco principles and practices before your departure.

It is necessary for you to educate yourself about the destination you are visiting by reading guidebooks and travel articles.

1. You don't have to educate yourself about the destination you are visiting by reading guidebooks and travel articles.
2. You aren't required to educate yourself about the destination you are visiting by reading guidebooks and travel articles.
3. You should educate yourself about the destination you are visiting by reading guidebooks and travel articles.
4. You may object to educating yourself about the destination you are visiting by reading guidebooks and travel articles.