During which era did mosses, ferns, and conifers first appear? 8.
e.6a.1 * cenozoic mesozoic paleozoic

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.