What accounts for an increase in the temperature of a gas that is kept at constant volume?
a. energy has been removed as heat from the gas.
b. energy has been added as heat to the gas.
c. energy has been removed as work done by the gas.
d. energy has been added as work done by the gas.

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted