What determines an atom's chemical properties?
a. the number of protons in its outermost shell
b. the number of electrons in its outermost shell
c. the number of neutrons in its nucleus
d. the number of electrons in its nucleus

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.

Which animal is a producer in this ecosystem

What is it called when lava when it erupts from the surface through volcanoes.