Describe the process through which this fossil formed. How does this process differ from the model in part A?

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex