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You could be lossing alot of blood or have seen something you dont want to say and if you get to light headed you could pass out

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Why does your vision black out and you get light headed when you stretch?

Stretching can momentarily decrease blood flow to the brain, leading to reduced oxygen and glucose supply which can cause a brief lightheaded feeling. Additionally, stretching can stimulate the vagus nerve, which can lead to a drop in blood pressure. This combination of factors can temporarily affect vision by causing a decrease in blood flow to the eyes, resulting in a brief blackout.


Is Calvin cycle light dependent or light independent?

The Calvin cycle is a light-independent process because it does not directly require light energy to function. It can occur in the absence of light, utilizing the products of the light-dependent reactions of photosynthesis to convert carbon dioxide into glucose.


What is the light that our eyes can detect known as?

The light that our eyes can detect is known as visible light.


How is bioluminescence different from the light produced by light bulbs?

Bioluminescence is light produced by living organisms through a chemical reaction, while light bulbs produce light through electricity passing through a filament. Bioluminescence is typically a natural, cold light, whereas light bulbs emit artificial, warm light. Additionally, bioluminescence is often used by organisms for communication, camouflage, and attracting prey, while light bulbs are man-made sources of artificial light.


What causes massive haedaches random sharp pain in arms and legs and if i turn to fast i get light headed and everything goes black?

These symptoms could be indicative of different conditions, including migraines, peripheral neuropathy, or issues with blood pressure regulation. It is crucial to consult a healthcare professional for a proper evaluation and diagnosis to determine the underlying cause and appropriate treatment. Treatment will depend on the specific condition identified.