Examlex
Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100.cm3. What is the concentration of nitrate ions in this solution?
National Wilderness System
a designation for preserving federal lands in the US to maintain their natural condition.
National Park System
A collection of natural parks managed by a governmental entity aimed at preserving natural and cultural resources for public enjoyment and education.
Nixon
The 37th President of the United States, known for his role in the Watergate scandal and his consequent resignation from the presidency.
Environmental Event
An occurrence or incident that happens in the natural world, often having a significant impact on ecosystems, communities, or the climate.
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