how do you count terminal bud scars to find out the age of the twig?
447820
try here http://www.ext.colostate.edu/pubs/garden/07704.html\nor\nhttp://highered.mcgraw-hill.com/sites/0072909412/student_view0/chapter6/chapter_summary.html
715789
Actually, as an xray tech, they do one of your wrist and your hand.  You have 8 bones in your wrist. These are the carpal bones.  Most babies aren't born with them so they develop over time.  If they see your carpal bones are or aren't developed that can tell you how far ahead you are in growth/how far behind you are. They use those body parts and compare them to the normal for someone your exact age.  It's just a uniform part of the anatomy from an xray standpoint.  It will be of your left hand and/or wrist and is most likely called a Bone Age Study.  Probably the easiest xray u will ever have. all you do is sit there with your hand on the table :)
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I am going on 116 years old... I have really been around..\nThere is NO WAY that a guy can tell. Just do not grunt and groan very much.. That is a sure sign of a fake.
425871
No as palm tree is monocotyledonous plant having no cambial or secondary meristemetic activity.Age can be estimated here by leaf scars on trunk.
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I'm assuming that that refers to giving the age of two things relative to one another, rather than identifying the absolute ages of things.  For instance, when you take two trees that lived in similar times and places, you can look at the width of the tree rings to get an idea as to the conditions (especially moisture) during a given year.  If you have two such wood samples, you should be able to see a pattern between the two.  Using taht information, you could count rings and figure out how much older one piece of wood was relative to the other.  But without knowing the year the trees dies, or without knowing the particular calendar years behind the droughts, you wouldn't know that absolute age of either.  I'd imagine that there are similar things with radioisotope dating if you have a reason to think that the atmospheric conditions creating certain isotopes might change, but not knowing the exact concentrations at the time an organism lived.
1174485
http://en.wikipedia.org/wiki/17-year_locust
775173
GREAT QUESTION!\n\n1. If you can count to 32, you can number the teeth.\n\n2. If you can count to 10, 20 or 30, you are good for most composite curing procedures.\n\n3. If you can push the start a timer that has been pre-set to 5 minutes, you are golden.\n\n4. This is the tricky one.  If you are trying to determine the length of a tooth that you are doing a root canal treatment on, you will have to understand ratios so that you can compare the actual length of an instrument to the film length of the instrument so you can determine the actual length of the tooth by measuring the film length.  Or, you can use an electronic apex locator and forget about the math.\n\n5. If you are really into it, you can use ratios to determine how much of which tooth should be visible, by using the "Golden Proprotion."  If you can't figure that out, don't worry.  You ought to be able to tell if something looks good or bad anyhow from experience.\n\nLet me tell you.  After 30 years in practice, the last time I used any math in dentistry was for my biostatistics class in dental school.  And even then, the professor declared that it was totally useless for dental students to learn that stuff and he vowed never to teach the class again.  Every now and then, I check the curriculum and they still don't teach biostatistics.\n\nI always wondered why in the heck you needed a year of calculus to get into dental school.  The only thing I ever figured out was that, if you were smart enough to pass calculus, you were smart enough to pass dental school.\n\nOh.  You might want to know how to balance your own checkbook.  :-)\n\nKevin - I never thought of that, because the film insert always tells you how many impulses to use.  But - when you take a license exam, they might ask you to calculate radiation doses of milliamp seconds or something like that.  Simple math.
80349
I don't know, but I have them too. I am 17, what I've heard is that they are just normal growth marks, and that they will go away as time goes by. I wouldn't be worried about it, in fact I am not about mines.
184668
http://www.ext.vt.edu/pubs/plantdiseasefs/450-604/450-604.html
384073
send me a picture of the bump for evaluation
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1. Find out what time you were born - convert it to minutes... We'll call that W. For example, if you were born at 1:30 am, then W=90 minutes.\n\n2. Multiply your current age in years times 365 times 24 times 60... call it X. For example, if you're 16, then the formula is 16 x 365 x 24 x 60.\n\n3. Count how many leap years you have been alive for... Each year that is a multiple of 4 is a leap year. Multiply that times 24 x 60... call it Y. Remember, if you were born on a leap year and your birthday is after February 29th, don't count it!\n\n4. Count how many minutes have passed today... Current hour (plus 12 if it's after noon) times 60, then add the current minute... Call it Z. Ex: if it's 2:30 pm, 2+12, then times 60, then plus 30, so Z = (14 x 60) + 30\n\n5. Your age in minutes is X+Y+Z-W\n\nRemember to do steps 4 and step 5 quickly - you've only got 1 minute before the answer changes! ;-)
1037204
Click on the link below and you can count them
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It is estimated to be 1300 years old. Please read on;\n\nhttp://www.biologie.uni-hamburg.de/b-online/earle/pi/pin/hel.htm
205601
If you're referring to a human skeleton, yes, a good approximation can be done because our teeth have limited growth (they're brachydont) and we only have 2 generations, like most mammals. Therefore, an expert could see if the teeth are part of the milk or definitive dentition, and also assess the wear of the occlusal (grinding) surfaces. And not only the external appearance of the teeth is examined, but also the tissues (dentine, cement, enamel, pulp cavity).\nThere are standards to calculate age and they're normally used by forensic experts.\nA list of bibliography on the subject:\nhttp://users.breathe.com/malt/agedet.htm\nI've tried to find articles but none are free :-(\n\nHowever, other mammals have permanently-growing teeth, and therefore age determination is more difficult. And in other vertebrates that have more dental generations, other methods are used for age determination.
746248
I recommend the following link:\nhttp://www.amazon.com/Phytochemical-Methods-Modern-Techniques-Analysis/dp/0412343304\n\nYou will need to purchase a lab guide or consult with a Life Sciences Dept. for further assistance
214132
17\n\nI'm sure of it...
258248
One year and 10 months old.  \n\nYou take 1 million minutes, divide by 60 to get how many hours they have lived, divide by 24 to get how many days they have lived, divide by 365 to get how many years they have lived.  You arrive at 1.9 years, which is the same as 1 year 10 months.