Deep inside the core of the sun, protons can collide into eachother with enough speed that they stick together to form a helium nucleus and generate a big amount of energy at the same time.
Honestly it would be the Exosphere<span> but since that's not one of the choices it would be the Thermosphere. </span>
The Answer Would Be
B. <span>the similarities in the body systems such as the nervous and circulatory systems
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Plz Mark Branliest
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I would say oxygen because respiration is breathing mechanically.