Carbon monoxide is lethal
Mold spores affect animals and plants
Tobacco is also lethal
So A. Tobacco smoke
The answer is true.
Hope this helps.
The Earth's ocean is a large body of water that is divided into four parts: Atlantic, Arctic, Indian, and Pacific Ocean. Some countries like the U.S. started recognizing the Southern Ocean as the fifth, though it's still not always considered one of the main ones. The answer is B: four.