Why might polar bears become extinct a. they do not have any predators b. they may drown when the glaciers melt c. their thick fur is not suited for a warming climate d. too many hurt them

They do have predators because of killer whales, although that is not the killer whale's only source of food.

They are good swimmers, however if all the glaciers melt then they would grow tired of swimming and would drown.

Polar bears fur is not suited for a warm climate, although they could survive for a while.

I would go with d. because all the answers are correct.

after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

hope this

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: