so bio-indicators i think are actually
really cool it's this idea that things
in biology so in our biosphere plants or
animals might indicate tell us something
about our environment or maybe even
changes to that environment and so one
example is here at the Virginia living
museum we have the ozone bio indicator
garden and there are plants that are
highly susceptible to damage from being
in contact with ozone and so ozone can
happen at the ground level and that's
bad for us as humans and that's also bad
for some plants they don't want to be
breathing in that ozone filled air and
what we see happening is on the plants
if you turn them over they get almost
bruises so to speak it's called
stippling that happens on the back of
them and so if we see that it's an
indicator to us that there are high
concentrations of ozone in our
environment