What would prevent the pathogen from reaching the coral?

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

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

Why are common names a problem for scientist?