I think it is D
Hope this help you??
The second stage takes place in the estogagus which leads to the stomach then the small intestine then the big intestine and then the toilet there
you welcome
Answer:
D
Explanation: The answer could be any of these, but I think the smartest answer would be D.
Outdoor air pollution is a complex mixture of several pollutants, the common sources of outdoor pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry.
They major classes of outdoor pollutants include;
Carbon monoxide; carbon dioxide, sulfur dioxide, nitrogen oxides, VOC's, SPM's, photochemical oxidants, ozone and PANs.
An atmosphere is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body.
