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Gas exchange is when oxygen is transferred from the air in the lungs to the blood and carbon dioxide is transferred from the blood to the air in the lungs. It occurs in the alveoli of the lungs.The lungs ...
It's better to think of the subjunctive as a mood rather than a tense. As a general rule, it is used to express a feeling of uncertainty in a sentence.
This is the minimum initial velocity required to move from a point to infinity in a gravitational field.
Infinity is defined to have...
Seismic waves are shock waves released by the rupture of rock duing an Earhquake. Seismic waves radiate from the focus of the earthquake and travel through rocks.
Primary waves (P-waves) are c...
Endosymbiosis is where two organisms live together, one inside the other: endo=in, sym=together and biosis=living.
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