Plants use carbohydrates to build things such as cellulose. how do plants acquire these building blocks to build mass?
a. they absorb carbohydrates through the soil.
b. they absorb dissolved carbohydrates via water.
c. they make carbohydrates through the process of photosynthesis.
d. they make carbohydrates through the process of cellular respiration.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.