changes in the chemical conposition of the atmosphere that may produce acid rain are most closely associated with

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

Mrna: gcuaauguc what amino acids does the mrna above code for? what type of amino acids or function are uag, uga, and uaa coding for? which codon (3 letters) signals translation to start and also codes for the amino acid methionine (met)?