Mutations can be the cause of some
A. altered proteins
B. genetic disorders
C. Both a and b are correct.

I would say your answer is C.

Mutations contribute to genetic variation within species. Some mutations affect the gene that instructs the building of a protein. So mutations can cause altered protiens AND genetic disorders.

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.

i think its both a and b