Answer:
Infrasound and ultrasound
A. Carbon Dioxide. it goes into the atmosphere and there's carbon emissions.
C.) Cone
A cone (in formal botanical usage: strobilus, plural strobili) is an organ on plants in the division Pinophyta (conifers) that contains the reproductive structures. The familiar woody cone is the female cone, which produces seeds. ... The individual plates of a cone are known as scales