What is the answer to lesson 24 pls i need help

If pressure and temperature remain constant, will the volume of gas in the respirometers increase or decrease?

The place or system in which goods are traded illegally it is two words

What information does a survey provide? a. an accurate description of the population surveyed b. whether there is a predictive relationship between two variables? c. whether there is a cause-and-effect relationship between two variables d. none