Which are vascular plants?
a. ferns and mycorrhiza
b. ferns and seed plants
c. mosses and seed plants

The answer is b because ferns are primitive vascular plants and seeded plants are one of the characteristics of vascular plants

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

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.