1.  Geothermal energy is, basically, far too rare and too low-grade for widespread economic use.

2.  They aim to introduce scientists to potential customers in forest states, and to help develop ways of making sustainable economic use of forest reserves.

3.  Botanical gardens were being established, and the economic uses of plants were being discussed in the distinguished circles of newly formed and highly prestigious natural history societies.

4.  But his plan is not the only sound economic use of the surplus.

5.  One mission of the botanical garden is to preserve native and endemic plants and demonstrate the economic uses of plants on the island.

6.  Many Russians still consider farmland a national treasure and object to converting it to other economic uses.

7.  The report said any economic use of Howard would be long-term but that Sherman was more encouraging because it is a valuable environmental reserve.

8.  Will they be offered all reasonable economic uses of their land compatible with the maintenance of the locality as an agricultural area?