|
Because of the giant trees, the Amazonian rain forests can produce 20% of the oxygen in the atmosphere, which is a great deal more than a similar area of grassland can produce. |
|
The giant trees of the Amazonian rain forests actually produce 20% of the oxygen in the atmosphere; the same area of grass could not produce quite so much. |
|
On their own, the Amazonian rain forests, with their giant trees, are responsible for at least 20% of the oxygen in the atmosphere, which is a far greater amount than a similar area of grassland could produce. |
|
About 20% of the oxygen in the atmosphere is produced by the giant trees of the Amazonian rain forests, and this amount is much more than the same area of grass would produce. |
|
While the giant trees of the Amazon rain forests produce more than 20% of the oxygen in the atmosphere, the same area of grassland could not produce nearly as much as this. |