What type of macromolecule acts as a catalyst in biological systems? a. proteins called enzymes
b. carbohydrates called starches
c. lipids called steroids
d. nucleic acids called DNA

blah

explanation:

bc blah

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

answer; (b) clear with a slight blue tint;