Give an adaptation found in nature for each organism and explain how this adaptation helps this organism to survive and reproduce in the following environments: A Saguaro cactus:
A grizzly bear:
An orb spider:
A robin:
A jellyfish:

Most of the carbon on earth is stored in the form of

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.

Several billion years ago which gas was the least prevailant in the atmosphere