WORD BANK at 5. Fill in the blanks to best complete the following statements. The lock and dam together form a(n) with the higher and lower river levels. Water moving through the lock starts as a(n) and end as a(n) system boundaries output input o 30 Unit 1 Introduction to Engineering and Science

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.