Use coordination to combine each pair of sentences below into one sentence. Use a word or phrase that expresses the relationship shown in parentheses.

1-A stamp's rarity affects its value. The way the perforations are made affects the stamp's worth. (addition)
2-A stamp was missing a single perforation. Its value was greatly reduced. (result)
3-A stamp printed in British Guiana in 1856 is the world's rarest stamp. It is the most valuable stamp of all. (result)

Question

Use coordination to combine each pair of sentences below into one sentence. Use a word or phrase that expresses the relationship shown in parentheses.

1-A stamp's rarity affects its value. The way the perforations are made affects the stamp's worth. (addition)
2-A stamp was missing a single perforation. Its value was greatly reduced. (result)
3-A stamp printed in British Guiana in 1856 is the world's rarest stamp. It is the most valuable stamp of all. (result)