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пестицид

A pesticide is a substance used to kill a pest, and in a farming context a pest is anything that attacks or competes with crops. Hence, there are many different types of pesticides: for example, insecticides kill insects, and herbicides kill weeds. The chemicals used in pesticides can sometimes be toxic to humans, however, so organic farming endeavours to use natural rather than synthetic substances as pesticides.

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Industri / Domain: Lingkungan alamiah
Kategori: Perubahan iklim
Company: BBC
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Oil refining is the process of taking crude oil and turning it into fuels such as petrol and diesel. Crude oil varies in its composition, consisting of hydrocarbons and other ...

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Lingkungan alamiah; Perubahan iklim

There is no universally accepted definition of organic farming, and each country regulates what can and cannot be labelled "organic". In general, it describes a form of ...

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Lingkungan alamiah; Perubahan iklim

Ozone is made up of three oxygen atoms. It has benefits and dangers depending on where in our atmosphere it occurs: near ground level, it is a pollutant that affects respiration; ...

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Lingkungan alamiah; Perubahan iklim

The total amount of greenhouse gas emitted by a country per unit of population.

фотоволтаична клетка

Lingkungan alamiah; Perubahan iklim

Photovoltaics are materials that produce electricity from sunlight. A single photovoltaic cell can be used to power small devices such as calculators; combined in solar panels ...

полимер

Lingkungan alamiah; Perubahan iklim

A polymer is a giant molecule made up of thousands of atoms. It can be natural or man-made (synthetic). Many plastics in everyday use are polymers, such as polythene or PVC; but ...

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Industri / Domain: Buah & sayuran Kategori: Sayur-sayuran berakar

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Annual or biennial plant (Raphanus sativus) of the mustard family, probably of Oriental origin, grown for its large, succulent root. Low in calories ...