My horse trainer told me that horses know what is good for them and what is bad for them, if he eats it and nothing happens to him then he's fine and he can eat it, but if he refuses it might mean that he doesn't like it or he thinks it's bad for him. Page 1 of 3 1 2 3 Last.
1 Measuring the length of long bones can give an estimate of age for children, but this technique is useful only until bones have stopped growing. 2  The tibia completes growth at about age 16 or 17 in girls, and 18 or 19 in boys.he ends (epiphyses) and bony shafts (diaphyses) of long bones form separately in the womb. At birth, the ends of the long bones are mainly cartilage, with centers of bone beginning to form inside.
Upon death, Carbon 14 in the decomposing body undergoes its own decomposition or radioactive decay which is what radioactive carbon dating measures. Carbon 14 (affectionately called C14) is not a stable isotope of Carbon and has to decay into the much stabler Nitrogen 17 (which can be found in the atmosphere). Therefore, once an organism dies, the C14 it holds in its body wriggles free in a radioactive decay process. The half-life of C14 is 5, 730 years and thus makes a pretty accurate factor for dating fossils which can be billions of years old.