The Redwoods of California are among some of Earth’s tallest trees. In fact, one of the tallest redwoods on record is 369 feet high (that’s about two Statues of Liberty!). That tree started out as a tiny seedling. Where did the large majority of the plant’s mass come from?
a. the water in the ground
b. the oxygen in the air
c. The carbon dioxide in the air
d. the minerals in the soil