What happens to about 10 percent of the energy represented in each trophic level?

What type of genetic drift would be simulated if all the beans that were not selected died out?

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 percentage of light hits earth's surface directly?