When a label says that a food has 20 amino acids what are they really trying to say?

Which of these is the most likely consequence of falling petroleum price

Which nucleotide component contains nitrogen

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.