Choose two sentences that help develop the idea that the process of restoring China's natural environment benefited the country both agriculturally and financially. The project was not an easy one. It required 500 million dollars, a decade of backbreaking labor, and difficult changes. Sheep and goats were confined to pens for feeding. People stopped farming on very steep hills and planted trees instead. Dams were carved into the hillsides to slow water runoff and retain fertile sediment. These tremendous efforts rehabilitated the area, improving both the economy and the ecology. With more water and farmable ground available, people were able to plant additional crops and fruit trees, as well as better feed for their livestock. To be sure, the Loess Plateau Watershed Rehabilitation Project can serve as an example to all concerned with their environment and the future.
Answer choices for the above question

It required 500 million dollars, a decade of backbreaking labor, and difficult changes.

These tremendous efforts rehabilitated the area, improving both the economy and the ecology.

With more water and farmable ground available, people were able to plant additional crops and fruit trees, as well as better feed for their livestock.

To be sure, the Loess Plateau Watershed Rehabilitation Project can serve as an example to all concerned with their environment and the future.