Heptane means seven carbon atoms and since the general formula is CnH2n+2, heptane will be C7H16
either c or d but more likely d because food is mainly broken down in your stomach
When winds move air masses, they carry their weather conditions (heat or cold, dry or moist) from the source region to a new region. When the air mass reaches a new region, it might clash with another air mass that has a different temperature and humidity. This can create a severe storm.
