Do Carnivorous Plants Use Photosynthesis? Nearly all green plants are autotrophs. However, some plants, such as the Venus flytrap, are insectivores, as they trap and consume insects. But Venus flytrap and many other carnivorous plants contain chlorophyll, so they can make their own food. So why do they still capture and feed on insects or other organisms?
Plants like the Venus flytrap and Pitcher plants live in bogs or marshes. These are environments with really low concentrations of soil nutrients. So Nike Air Max 97 Nere Scontate , to substitute their nutrient requirement, these plants capture and eat insects. Occasionally, some carnivorous plants have been seen to ingest very small vertebrates such as frogs and toads. And in some rare instances, even mice have accidentally found their way inside such plants - only to be digested alive.
Why Do Onions Make You Cry? This monocot root has been known to cause a lot of teary eyes since time immemorial. For this seemingly ordinary vegetable, it has a very perplexing assortment of chemical compounds. When a knife slices through, stable molecules transform into volatile substances that get released as an unpleasant Nike Air Max 97 Bianche Scontate , sulphur- containing gas called syn-propanethial-S-oxide.
This gas is a chemical reactant and it irritates our eyes, more specifically, the lachrymal glands. This gland is responsible for producing tears, and as a result, we “cry”. One such tactic to avoid the “onion-tears” is to freeze the onion before chopping it. This ensures that the release of the volatile gasses is slowed down when slicing the onion.
Why do Humans Have Hair? Unlike other animals, the hair that humans possess serves no obvious biological function. For instance Nike Air Max 97 Ultra Scontate , the hair is not thick enough to provide thermal insulation, nor it is water-resistant enough to keep us from getting drenched. So why do humans have hair?
The answer is that human hair is a vestigial organ - that is, the original functionality of an organ is lost or significantly reduced. For instance, body hair on human ancestors was far more useful, - small muscles were attached to the root of the hairs, and when these muscles were activated Nike Air Max 97 Undefeated Scontate , the hair would have stood up. This feature would allow the air to be trapped between the hair, providing insulation against the cold. But over time, evolution led to the loss of this functionality and human hair became just another
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18.09.2019 05:03
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