What percentage of the US total coal production comes from here?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

About __ of the mass of the cell is water