You will have the following equipment available to you to monitor temperature and carbon dioxide and oxygen. This data will be useful to study the effect of temperature on cricket metabolic rate because

Yes. Levels of Carbon dioxide must be equal in proportion to metabolic rate of the system. is a product of cell respiration and should be monitored.

Explanation:

Levels of carbon dioxide must be equal in proportion to metabolic rate.

Carbon dioxide is a product of cell respiration and should be monitored to avoid surfocation and likes

As the temperature of the system (or body) increases, oxygen level decreases leading to increase in carbon dioxide level which is very dangerous for any system or an organisms. This can leading to Astma and other respiration problems.