A hematocrit may be used to: 1  Identify and evaluate the severity of anemia (low RBCs, low hemoglobin, low hematocrit) or polycythemia (high RBCs, high hemoglobin, high hematocrit) 2  Monitor the response to treatment of anemia or polycythemia and other disorders that affect RBC production or lifespan.
Biomass is any organic matter that can be used as an energy source. Wood, crops, and yard and animal waste are examples of biomass.People have used biomass longer than any other energy source. For thousands of years, people have burned wood to heat their homes and cook their food.Biomass gets its energy from the sun.Plants absorb sunlight in a process called photosynthesis.iomass is any organic matter that can be used as an energy source. Wood, crops, and yard and animal waste are examples of biomass.
Food chains, pyramids of numbers and pyramids of biomass are all ways of showing how energy is passed on from one organism to another. Biomass is the food available for the next trophic level (feeding level) in a food chain. Biomass is used as a source of renewable energy to reduce our dependence on fossil fuels.he pyramid of numbers usually shows that the number of organisms at each trophic level gets smaller towards the top. This particular case is an exception â one tree provides food for many caterpillars.