Hypoventilation dramatically increases carbonic acid concentration and involves? extremely fast breathing

extremely slow breathing

irregular breathing

intermittent breathing

extremely deep breathing

Ibelieve the answer is d. macula  hope my answer has you : )

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.