Which substances are produced as waste products by plants in different processes? a) oxygen and urine b) carbon dioxide and oxygen c) carbon dioxide and uric acid d) carbon dioxide and urine

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called