~science ~

*question down below*

^giving 10 points^

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred

Which statement best addresses the differences in sex cell differentiation between the red-eared slider turtle and a human?