Scientists have altered the genetic code of some potato plants by inserting genes that make the plants produce an insecticide. What is this process called?
A. Cloning
B. DNA fingerprinting
C. Genetic counseling
D. Genetic engineering

answer; /// i do believe the correct answer is (

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.