Oxygen is formed from carbon dioxide in (1), while carbon dioxide is formed from oxygen in (2).

(1) photosynthesis, (2) cellular respiration
(1) cellular respiration, (2) photosynthesis
(1) fermentation, (2) anaerobic respiration
(1) aerobic respiration, (2) photosynthesis

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

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.