Some species of flowers have markings that are visible only to insects with the ability to see ultraviolet light waves. These markings help the plants - A. avoid parasitic insects
B. attract pollen-gathering insects
C. seek out moisture in the soil
D. create a strong scent to attract bats​

B. attract pollen-gathering insects

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

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.