Select the correct answer from each drop-down menu. A balloon holds a certain volume of air. In what three ways can the volume of the balloon be increased?
- the number of air molecules in the balloon(increase or decrease)
- the temperature of the balloon(increase or decrease)
- the pressure on the balloon(increase or decrease)

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.

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