Choose the word that best completes each sentence. Bacteria cells have a rigid cell
that gives the bacteria its shape.

The outermost structure of the bacteria cell is the
, which comes in contact with the environment.

Some bacteria have
, or whiplike tails that spin to propel them forward.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases