Response Sheet-Investigation 5 A group of young students looked at the oak trees in a local park.
They wondered this question. Giant oak trees grow from tiny acorns,
so where do all of their wood, bark, and leaves come from?
One student explained, "Once the acorn sprouted in the ground, the
plant grew so big from minerals and nutrients in the soil."
Another student said, "I think the plant's mass came from the food
it ate."
What would you say to these students?