Which two images show naturally-occurring physical hazards or contaminants?

Study the diagram of a desert food chain . what would most likely happen if the kangaroo rats were killed off and removed from the food chain ?

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?

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel