<span>Both are densely populated</span>
The correct option is D.
Thomas Edison was an American investor and business man and he had been described as the American greatest inventor, because during his life time he accumulated 1,093 patents. He is the brain behind many devices which had radically changed the way people live their lives today. The devices invented by him include: phonograph, light bubs, moving pictures, electrographic vote recorder, the carbon telephone transmitter, etc.
Tennyson’s version highlights the emotion of the scene with imagery and figurative language.
We breathe our carbon dioxide, so do plants. Animals and plants get rid of carbon dioxide gas through a process called respiration.