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 known as Polygonum cuspidatum in North America, in Europe it is known as Fallopia japonica. It is a very tolerant plant and survives in a wide range of soil types. Its rhizomes can survive temperatures of â35 Â°C (â31 Â°F).apanese Knotweed is known as Polygonum cuspidatum in North America, in Europe it is known as Fallopia japonica. It is a very tolerant plant and survives in a wide range of soil types. Its rhizomes can survive temperatures of â35 Â°C (â31 Â°F).