Help plz Answer this :( What part of the fern is more often fossilized?

(Choose one word from below)
Stem
Leaves
Roots

Time ! for a smell to begin the process of registering in your brain, first you must a) inhale odor molecules into the nasal cavity b)transduce scent chemicals c)have a scent to inhale d)all answers can work

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone