Which option indicates what Ellis collects in the following scenario? Ellis learned about how trees help with carbon dioxide so humans do not breathe in so much of it. After he learned this,
he decided to go out and gather materials to make his own air screen over his bed.
bark
O branches
leaves
stems
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In what for do plants utilize nitrogen? why do they need nitrogen?

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.

This is collection of data made by comparing objects in standard units. in science, the units are metric.