Researchers determine the population of phytoplankton in an area of the ocean is significantly decreased compared to the previous year. What can they conclude from this observation?

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?

What occurs to the cell during mitosis

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment