Locate an area that has been relatively undisturbed by human activity. There should be many fallen leaves, twigs and pieces of bark. Remember to have a partner with you at all times. â¢ Once you've found a suitable patch of leaf litter, measure out an area of one meter squared using the meter stick.n the areas with lots of human interference, human activity has contributed to a lower biodiversity. People might litter on the ground or simply step on animals. Other times, people may add chemical fertilizers and pesticides to the soil.
Accreditation Review Council on Education in Surgical Technology and Surgical Assisting. The ARC/STSA establishes, maintains, and promotes quality standards for education programs in surgical technology and surgical first assisting.
Prostate-specific antigen, or PSA, is a protein produced by normal, as well as malignant, cells of the prostate gland. The PSA test measures the level of PSA in a manâs blood. For this test, a blood sample is sent to a laboratory for analysis. The results are usually reported as nanograms of PSA per milliliter (ng/mL) of blood.