Right-to-left writing developed historically in certain regions and became the standard for languages like Arabic, Hebrew, and Persian. The direction of writing is a cultural convention that varies by language and region, not determined by any linguistic rule.

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Yes, gut feelings are real physical sensations caused by your nervous system responding to situations, though they are not always accurate predictors of outcomes. Your brain processes information faster than your conscious mind and sends signals to your stomach and digestive system.

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Déjà vu is the strange feeling that you've experienced something before when you actually haven't, and scientists believe it happens due to a glitch in how your brain processes and stores memories. Research suggests it's a normal brain function that occurs in most people occasionally.

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A rainbow displays red, orange, yellow, green, blue, indigo, and violet because white sunlight is made up of different colors that bend and separate when passing through water droplets in the air. Each color bends at a slightly different angle, causing them to spread out in order of wavelength.

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Identical twins develop from one fertilized egg that splits into two, so they share 100% of their DNA and are always the same sex. Fraternal twins develop from two separate fertilized eggs, so they share about 50% of their DNA like regular siblings and can be different sexes.

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