What caused the composition of earth’s early oceans to transition from dissolved carbon dioxide to dissolved oxygen? a. ultraviolet rays from the sun converted dissolved carbon dioxide to oxygen. b. excessive rainfall over ocean waters caused carbon dioxide to separate into carbon and oxygen. c. cyanobacteria growing in ocean waters used up carbon dioxide and released oxygen. d. lightning caused the dissolved carbon dioxide in the ocean to decay into oxygen.

The transport tubes from food came down the plant are called?

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.

What are the pros and cons of quadrat sampling?