The principle of the wet-bulb thermometers states that
a. evaporation causes cooling
b. evaporation causes heating
c. moving air cools objects
d. the dry-bulb thermometer absorbs water from the wet-bulb thermometer

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.