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If you're referring to crop seed banks and not weed seed banks, the crop seed banks will help keep a record of many species and varieties of crop seeds that could be used to help re-propagate a particular type of food crop if it went extinct or was threatened somehow, creating more ability for food to be produced from those seeds that have been saved in the seed bank.

If, however, you're referring to weed seed banks, they stay in the soil for much longer than a crop producer would like and will always propogate once conditions are right. Weeds are a threat to a crop because they compete with that crop for moisture, nutrients and sunlight, and if not controlled by herbicides can reduce yields or choke out a crop altogether, leaving the farmer less to harvest and leaving more people going hungry.

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In seed banks which came first seed banks under mountains or seed banks in giant freezers?

Seed banks in giant freezers came first. The first seed banks were established in the 20th century to preserve plant genetic diversity. The concept of seed banks under mountains, like the Svalbard Global Seed Vault, came later as a backup measure to protect seeds from natural disasters and global crises.


Where are the seed banks in the world?

Some of the major seed banks in the world are located in countries such as Norway (Svalbard Global Seed Vault), the United States (National Seed Storage Laboratory), and the United Kingdom (Millennium Seed Bank). These seed banks serve as repositories for genetic diversity and play a crucial role in conserving plant species for future generations.


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