What effects do ocean currents have on short-term climate change? Check all that apply.

Ocean currents can carry warm water, which can raise the temperature of the air and land.
Ocean currents increase the strength of prevailing winds, which can cool the air and land.
Ocean currents can carry cold water, which can cool the air and land.
Ocean currents increase hurricane activity, which can raise the temperature of the air and land.
Ocean currents can carry warm water, which causes hurricane activity and raises the temperature of the air and land. PLZZ HELP!!!

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.