Why would a desert ecosystem that is dry and shady support less biodiversity than a sunny forest with frequent rainfall?

What must be true for natural selection to heppen

How does a lytic infection differ from a lysogenic infection?

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?