What organism is the main producer in freshwater ecosystems?

a. phytoplankton
b. zooplankton
c. anaerobic bacteria
d. none of the above

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

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.