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.
Knowledge center. Obstructive sleep apnea, also known as OSA, is a sleep disorder in which the person stops breathing for at least 10 seconds each hour during sleep. It is caused by relaxation of the throat muscles; the soft tissue in the back of the throat collapses and closes, resulting in blocked airways.