Last Word. Bathed in heat I had a hot bath one evening and decided not to let all the heat go to waste. So I left the plug in until the water had given up all of its heat to the house. But when is the best time to pull the plug out? Should I wait until the water is the same temperature as the ambient indoors air, or should I keep the extra thermal mass in the bathtub, and then pull the plug when the temperature outside the house is at its lowest? Best before? What is it that allows fruitcake to survive so long?
Condiment cleaner I recently read with interest in The Last Word of somebody using lemon juice to clean a bar top made of zinc. BioDigital Human: Anatomy and Health Conditions in Interactive 3D. Circulatory System - Amazing Science Online! The circulatory system is one of the major systems in the human body and transports nutrients, wastes and hormones around the body. The heart, blood, arteries, capillaries and veins are the major structures in the circulatory system. Resources on the lymphatic system are also found on this topic page. Online Resources Home Biology Top Previous Next 23 and 1/2 Hours – Dr. Real World Home Biology Top Previous Next altitude sickness - a collection of non-specific symptoms caused by low oxygen levels at high altitude, commonly above 2400 metres.
Humans – 70 beats per minute – can measure own heart beat – pulsehummingbird – up to 1260 beats per minuteice cream headache (brain freeze) – vasoconstriction and vasodilation – when a cold substance (such as an ice cream or slushie) touches the roof of your mouth it causes capillaries in the sinuses to constrict and dilate quickly as they warm up. Key Knowledge Home Biology Top Previous Next Topic Ideas Home Biology Top Previous Next. The Why Files | The Science Behind the News.