Is the vaccine effective ?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

True or false multiple lane changes must be done individually going through the same procedures for each lane change

Define adaptation. why do organisms adapt? give an example.