Which is an example of a pioneer species? lichens ferns spiders squirrels

Describe how the above factors create barriers for maintaining your mental and emotional health what barriers do they create

What kind of wound occurred when the skin scrapes against a hard surface and tiny blood vessels break in the outer layer of skin

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm