Joe Dunman's Schoolhouse was the only school in that school community, and it reported a student population of 13 in 1883. Harris County Common School Districts: In 1884, Texas passed the Common School Law, which provided for a system of county schools to be established across the state.
1 9. 2  Disadvantages Of Nanoparticlesï Small size & large surface area can lead to particle aggregation .ï Physical handling of nano particles is difficult in liquid and dry forms.ï Limited drug loading.ï Toxic metabolites may form.3  10. Disadvantages Of Nanoparticlesï Small size & large surface area can lead to particle aggregation .ï Physical handling of nano particles is difficult in liquid and dry forms.ï Limited drug loading.ï Toxic metabolites may form. 2  10.
Disadvantages of Estimating Biomass. 1  Collecting biomass data can be very time and labor consuming. Cover, frequency and density are generally more quickly estimated. 2  There are many methods to directly measure biomass of herbaceous plants, but, it is difficult to estimate biomass of shrubs and trees.