Plants take in atmospheric carbon dioxide by photosynthesis, and are ingested by animals.
The highest rate of carbon-14 production takes place at altitudes of 9 to 15 km (30,000 to 50,000 ft).
Although particularly connected with New York City and New York City cuisine, the hot dog became ubiquitous throughout the US during the 20th century, and emerged as an important part of some regional cuisines (notably Chicago street cuisine).
Claims about hot dog invention are difficult to assess, as stories assert the creation of the sausage, the placing of the sausage (or another kind of sausage) on bread or a bun as finger food, the popularization of the existing dish, or the application of the name "hot dog" to a sausage and bun combination most commonly used with ketchup or mustard and sometimes relish.
When your crush looks back at you with a constant gaze or gradually -- and coyly -- glances down, her face is showing her interest.
While turning her eyes to the side in a far away or bored glance indicates that she could care less, extended eye contact has an opposite effect.