1. if you increase the air temp. a crickets chirp will a) decrease b) increase c) stay the same 2. if you double the air temp. the chirp rate will a) double b) be halved c) remain the same d) all of the above 3. assume that the cricket is chirping at a rate of 148 chirps/minute and slows to a rate of 10 chirps/minute. could this change in behavior be explained by either an increase in the temp or a drop in the wind speed? a) yes b) no 4. could this change in behavior be explained by both the air pressure and the humidity increasing? a) yes b) no 5. could a drop in the number of crickets nearby and an increase in humidity have caused this change in behavior? a) yes b) no

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist