We need to see an ecosystem that goes with the rat to answer this question.
When water from the oceans/seas evaporate up into the atmosphere.
Oak Bark was the first cell viewed by the light microscope
1 and three ........................
<u>Answer:</u>
The Answer is <em><u>Option D. </u></em>
<em>Exchange of respiratory gases, oxygen and carbon dioxide take place in the alveoli of the lungs. Oxygen which is inhaled from the atmosphere diffuses through the walls of the alveoli and reaches to the adjacent capillaries into the red blood cells.</em>
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