Most rare and threatened flowers and other plants cannot tolerate high nitrogen.

But an Administration official said the oil could threaten desalting plants for Saudi cities within three weeks, depending upon its size and how fast it moved.

The park is threatened by the creation of a highway in Algeria, which would threaten the rare animals and plants of the park.

Grouse were never actually introduced, but the heather is sprawling, threatening the ecological system and endemic plants of the park.

Expected shortfalls in available fuel threaten future plants and contribute to volatility of uranium prices at existing plants.

Alien plants threaten indigenous plants and reduce grazing areas, which contributes to soil erosion.

With concern to estuaries, an increase in salinity would threaten aquatic animals and plants that cannot tolerate high levels of salinity.

There are 15 threatened and endangered plants, 3 endangered birds, and 1 endangered bat species in the area.

Threatened natural areas, plants and animals of the world.

A BHS provides a refuge for rare and threatened plants and animals.