Lower back tightness can cause muscle twitching, pain and reduced range of motion. Photo Credit Dirima/iStock/Getty Images. Lower back muscle tightness is the cause of a muscle spasm. This can be brought on by a strain, overuse or muscle weakness, according to BetterMedicine.com. If your lower back muscles lack strength, and a stronger back muscle pulls on this weak muscle, it can create tightness or pain. While lower back tightness can be managed at home, occasionally medical intervention is needed to treat this common condition. Rest your lower back muscles.
Wasp and Scale Insects Help Control Giant Reed. An arundo gall wasp deposits eggs into the main stem of a giant reed. (Image by USDA/ARS) The release of tiny insects to combat the invasive weed giant reed is paying off, according to a recent U.S. Department of Agriculture (USDA) study.
Best Answer: There's 4 parts to an egg: the shell, the yolk(yellow - nucellus) the albumin (the clear part), and the chalaza, which is the little white part attached to the yolk. It's the least familiar part of the egg, so here's a little info: The chalaza (Greek - khalaze -hailstone) is a structure inside animal eggs and plant ovules(eggs).It attaches or suspends the yolk (nucellus) within the larger structure. In animal eggs, the chalaza is composed of one or two spiral bands of tissue that suspend the yolk in the center of the white. It is cloudy and white and if pulled on acts like a spring. The longer the egg ages, the more the tissue eventually breaks down. This is why older eggs have a runny or less pronounced yolk. Also, the chalaza is the agent that makes some of the egg white stick to the yolk when an egg yolk is removed manually.