Answer:
These stenotype machines work by typing in syllables rather than letters. ... By pressing three keys at once (called a “chord”), they can make the syllable “cal”, then “en” and “dar”. In the time it takes us to type three individual letters, a stenographer can type an entire word with the help of a stenotype machine.
Explanation:
In order for the scientist to know if the organism makes a
protein in the skin and for he or she to be able to analyze it with the use of
skin sample in determining its presence, the scientist should look and analyze
the cells found in the skin. He or she must be directed at the cell’s
mitochondria as where the protein synthesis occurs and to be able to determine
if protein is present, the scientist should find the Amino Acids.
Answer:
The correct answer would be fluorinated compounds and HFCs.
Explanation:
Chlorofluorocarbons or CFCs are halocarbons that contain molecules of chlorine, fluorine, and carbon. These chemicals were heavily used in sprays, packaging materials and refrigerators. CFCs cause depletion in stratospheric ozone.
Due of their harmful effects on ozone layer, chlorofluorocarbons have been banned since 1996. After the banning of chlorofluorocarbons, hydroflurocarbons (HFCs) and fluorinated compounds are in used in place of CFCs as they do not deplete stratospheric ozone as much CFCs does, and do not contain chlorine.
Thus, the correct answer would be fluorinated compounds.
