The Times Concise puzzle clues 2020 Apr 13

• Awkward, clumsy Crossword Clue
• Branch of science Crossword Clue
• Chipped piece of stone Crossword Clue
• Edible mollusc Crossword Clue
• Fix firmly in position Crossword Clue
• Flood embankment Crossword Clue
• Flying mammal Crossword Clue
• Grapple; strive Crossword Clue
• Matter Crossword Clue
• Modifying word Crossword Clue
• Not deriving from living matter Crossword Clue
• Not openly shared Crossword Clue
• Obtained Crossword Clue
• One not easily giving up Crossword Clue
• Optical organ Crossword Clue
• Place of protection Crossword Clue
• Public square Crossword Clue
• Quarrel; struggle Crossword Clue
• Region of Mexico Crossword Clue
• Risky, dangerous Crossword Clue
• Sandwich; towed barge Crossword Clue
• Thin fabric Crossword Clue
• Town on the Trent Crossword Clue
• Wash by immersion Crossword Clue