Sentences with phrase «mostly about carbon dioxide»

The second energy challenge is to reduce greenhouse gas emissions, which is mostly about carbon dioxide, most of which emanates from stationary sources (heat and power).

Not exact matches

Globally, about 32 million acres of forest is destroyed each year, mostly in the tropics and, because trees absorb carbon dioxide, deforestation is responsible for some 15 percent of all greenhouse gas emissions.

But before the first photosynthesizing organisms appeared about 2.4 billion years ago, the atmosphere likely contained mostly carbon dioxide, as is the case today on Mars and Venus.

The current atmosphere of Mars is tenuous, with a surface pressure only about 3 % of Earth's, and consisting mostly of carbon dioxide.

The carbon dioxide they produce will equal about an eighth of China's current total carbon dioxide emissions, which come mostly from coal - burning power plants and factories.