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nekit [7.7K]
4 years ago
8

What does learn by trial and error mean? (

Biology
1 answer:
Ilia_Sergeevich [38]4 years ago
3 0
The answer is D: test possible choices and then avoid ones that are not desirable.
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The vatican archives maintain a vault where century's worth of old documents are stored in very high n2 levels to prevent oxidat
Vinil7 [7]

The Vatican archives stores multiple precious documents and books of the world. These old documents dating hundred of years are kept in high nitrogen levels, in order to prevent the oxidation of the paper (papyrus). The presence of the high level of inert nitrogen in the air in the archives prevents any kind of damage that may caused to the paper or the ink on those documents. This high level of nitrogen, however, may affect the health of the individual by decreasing the oxygen levels in the body.

Hence, the answer is 'the oxygen level will be decreased in the body'.

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4 years ago
Which specialized carbohydrate is used in shrimp exoskeletons?
otez555 [7]

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chitin

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chitin is a complex carbohydrates, similar to cellulose, that makes up organic structure, such as the cell walls of fungi and exoskeletons of insects and other arthropods.

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2 years ago
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3 years ago
Which substance acts as a buffer in natural water?
Anna35 [415]

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I think the answer us sulfuric acid

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3 years ago
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Humans, as consumers impact biodiversity in either beneficial or harmful ways.
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<em>The main direct cause of biodiversity loss is land use change (primarily for large-scale food production) which drives an estimated 30% of biodiversity decline globally. Second is overexploitation (overfishing, overhunting and overharvesting) for things like food, medicines and timber which drives around 20%.</em>

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