Most fungi are saprobes. what does this mean?

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !