Tortoise shells and snail shells are similar in function to protect the organism from predators based on a comparison of the organisms in the images what can you conclude

the median of the data is 4.5.

not too sure but maybe in the hot springs.

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, i believe that the answer is 2. : 3