Most vehicles need catalytic converters not only so they perform at their best, but also because it's the law. Here's how they work and why they are required.
First, nitrogen additions can increase photosynthetic uptake of carbon dioxide, and thus carbon storage in the ecosystem, by stimulating leaf production or by increasing the levels of leaf ...
An ecologically realistic 24-year field study of grasslands showed that elevated levels of carbon dioxide nearly tripled species losses attributed to nitrogen pollution. Dozens of studies have ...