The same experiments may be made with another freshwater crustacean, namely Daphnia, with this difference, however, that it is as a rule necessary to lower the temperature of the water also. If the water containing the Daphniae is cooled and at the same time carbon-dioxide added, the animals which were before indifferent to light now become most strikingly positively heliotropic. Marine copepods can be made positively heliotropic by the lowering of the temperature alone, or by a sudden increase in the concentration of the sea-water.英文原著 · 《Darwin and Modern Science》
The faint light from the sky is sufficient to cause animals which are in a high degree positively heliotropic to move vertically upwards towards the light, as experiments with such pelagic animals, e.g. copepods, have shown. When, in the morning, the absorption of carbon-dioxide by the green algae begins again and the temperature of the water rises, the animals lose their positive heliotropism, and slowly sink down or become negatively heliotropic and migrate actively downwards.英文原著 · 《Darwin and Modern Science》
Uh, photosynthesis converts carbon dioxide into food for plants.美剧 · 《Modern Family》
The first time I ever said "Quite, quite" was when you were 6 years old and you just told me about how plants make carbon dioxide.美剧 · 《Modern Family》
What are the symptoms of carbon dioxide poisoning?美剧 · 《Suits》
Why does yeast metabolize sugar and produce carbon dioxide. why does yeast metabolize sugar and produce carbon dioxide.演讲 · 《Genomics 101 ~ Barry Schuler》
There's inert nitrogen, high concentration of carbon dioxide crystals, methane.电影 · 《Alien (1979)》