This is awesome and very interesting. Your skin is like a conveyor belt, constantly renewing itself. Another extremely popular biology question! Thomas Haslwanter, CC-BY-SA, via Wikimedia Commons. All of this is a perfectly normal physiological response to the cold. 62) What are invertebrates? I did mention in the text that different drugs under these two broad categories work in different ways. Decrease in thickness of ozone layer in stratosphere. they give out perfict information may god bless you all im already about to ccatch the holy ghost. This hormone can trigger the overproduction of sebum - an oily substance that waterproofs your hair and skin. Even if now I have an itchy curiosity about how those 30 people die every year because of ants... Liz Elias from Oakley, CA on May 05, 2012: Very well done, indeed! But what sets them off? If some of these dead skin cells happens to block a pore, sebum can build up inside the hair follicle. The reason we associate a rumbling tummy with hunger is that the rumbling is louder the less food is present in the intestine. The more we can nurture an inquisitive nature the better! You clearly have a great gift for communicating biological concepts and processes. What is the waste gas released by aerobic respiration? Great questions and smartly answered! Sorry to be a stickler, just something that caught my attention. Every virtual pub quiz has a science round - time to specialise with some biology questions! Rhys Baker (author) from Peterborough, UK on May 07, 2012: @TDAPharm: I'm glad you enjoyed the hub. this heavily branched nerve misreads signals around the palate when you eat icecream, interpreting them as pain. Food does not move down our digestive system by gravity - if that were the case, astronauts would not survive in space. Voted UP! When air gets trapped in the folds and bends of the small intestine, the liquid sloshing around can create a rumble - amplified by the small space of the small intestine. Great job! Regarding the precise categorisation of the medications, this is only a broad hub and is not intended for experts. While science may not have the answers to every question, some biology questions are answerable. I put geology in your poll, as physiology was not included, but really it's a tossup--they both continue to intigue me. Wow! These muscle contractions occur right the way through the digestive system, from the oesophagus to the stomach to the intestines and out the other end. Most Read; Give Answer; Why are food chains limited to 4-5 tropic levels? This would be a fun series of questions to give kids to do for 'challenge activities.' Answer: They are a division of the animals which have no vertebral column. The most common reasons are: X-rays pass through our flesh and organs. Biology riddles are wondrous tools for education and fun. The explanation of each body problems is good. Dizziness is caused when the brain receives conflicting signals from different sensors. Biology Teaching & Learning Resources. I give time on science as much as I could do too. One of these adaptations is the constriction of blood vessels (vasoconstriction) close to the surface of the skin. very informative, and easy to understand. The water contains a high concentration of oxygen compared to the blood which causes oxygen to diffuse into the blood (carbon dioxide is the opposite - high concentration in blood, low in water, so it diffuses out). Answer: They are a division of the animals which have no vertebral column. The danger with x-rays is that they can knock electrons away from atoms, creating ions; this is why x-rays are called 'ionising radiation'.

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