更多oxygen例句

1. Most carbohydrates have the same oxygen to hydrogen ratio as water.
2. Her aunt eventually recovered, was taken off a ventilator and is home, though she still needs oxygen.
3. Photosynthetic cyanobacteria that arose some 3 billion years ago, for instance, began terraforming the planet by emitting oxygen.
4. Researchers found no benefit for hospitalized patients who didn’t need extra oxygen.
5. So extra oxygen in the atmosphere may have provided the conditions for large insects to evolve.
6. The others are difficult to identify, since they reacted with other oxygen-bearing molecules in the soil.
7. It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts.
8. Their decay proceeded without a ready supply of oxygen, producing hydrocarbons like methane instead of oxygen-bearing molecules.
9. As the heart pumps blood to the far reaches of the body, it requires its own blood flow to receive vital oxygen and nutrients.
10. The brain, also an organ, is particularly sensitive to the loss of oxygen.
11. In the lungs hemoglobin forms a loose combination with oxygen, which it readily gives up when it reaches the tissues.
12. They are cells which have been highly differentiated for the purpose of carrying oxygen from the lungs to the tissues.
13. Its most important compound is water, of which it forms one-ninth, the other eight-ninths consisting of oxygen.
14. In the flowers, both by day and night, there is a constant absorption of oxygen, and evolution of carbonic acid.
15. In the first case, the oil rapidly combines with the oxygen of the air, this being accompanied by great heat.