Name three impurities found in water​

Which one of these is a involving in both sexual and asexual reproduction

What type of specimens where you able to see under each of the microscopes in the microscope activity

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?