Plants serve many roles in an ecosystem.
Plants serve as a food source for other organisms.
Plants produce oxygen through the process of photosynthesis.
Plants can provide habitats for animals.
Plants can make and preserve soil.
Plants can also be transformed into useful products for people.
Which of the following is an example of a product that can be made from plants?
A.
paper
B.
resins
C.
medicine
D.
all of these