As in other mammals, thermoregulation is an important aspect of human homeostasis. Most body heat is generated in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid.
Japanese knotweed is a perennial weed, producing tall canes, up to 2.1m (7ft) in height during the summer. The canes have characteristic purple flecks, and produce branches from nodes along its length. These branches support shovel-shaped leaves.
Japanese Knotweed is an aggressive semi-woody perennial plant that is native to eastern Asia. In the 1800's it was introduced to North America as an ornamental species and also planted for erosion control.It has since spread throughout the United States and Canada.mpacts of Japanese Knotweed. 1  Spreads quickly, creating dense thickets that degrade wildlife habitats. 2  Reduces plant biodiversity by competing with other native vegetation. 3  Aggressive plant with a strong root system that has been known to break through asphalt and concrete. 4  Plant populations are extremely persistent. 5  It can establish along ...