um is there s set of answers i can pick from
the term "isotopes" refers to atoms of an element that have the same quantity of protons but differ in the number of neutrons they possess. isotopes of an element all have the same chemical behavior, but the unstable isotopes undergo spontaneous decay during which they emit radiation and achieve a stable state
non vascular plants are very small because their lack of a vascular system means they do not have the mechanics required for transporting food and water far distances. non vascular plants are small, simple plants without a vascular system. they do not have a phloem or xylem.