Complete Fig. 1.2 by drawing a diagram to show the formation of a peptide bond between two molecules of glycine.
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Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

What is the most important inorganic material for livings things? ! due tomorrow!

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere