Natural opioids come from the opium poppy plant, while synthetic opioids are man-made chemicals created in laboratories. Synthetic opioids are designed to mimic how natural opioids work in the body but can be more potent and have different effects.

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Environmental DNA (eDNA) is genetic material from organisms that is released into water, soil, or air and can be detected to identify species in an environment. In seawater, eDNA persists for days to weeks by attaching to particles and being protected from degradation by salt and other chemical conditions.

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The main causes of commercial building fires are cooking equipment, electrical and lighting equipment, heating equipment, and intentional fires. These account for the majority of fires in office buildings, restaurants, warehouses, and other commercial spaces.

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Scientists detected giant squid off Western Australia by collecting over 1,000 water samples from deep submarine canyons and analyzing them for environmental DNA (eDNA) shed by animals into seawater.

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Ski boot flex ratings measure how much the boot bends forward, with stiffer boots (higher numbers) providing more control and power transfer for advanced skiers, while softer boots (lower numbers) are more comfortable and forgiving for beginners. The right flex rating helps match a skier's ability level, weight, and skiing style for better performance.

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