Archeologists near the Dead Sea in 1998 reported the discovery of a substance made from collagen that they believe ancient people used as glue. A sample of newly prepared collagen exhibits 15.2 disintegrations per minute per gram (15.2d/min/g) of carbon. The 14C decay rate for the sample of ancient glue was found to be 5.60d/min/g. What is the age of the glue. Disintegration of 14C is a first order process with a rate constant 1.209 x 10-4 year-1. a. 8000yrs. b. 7985yrs. c. 8437 yrs. d. 6575yrs. e. 10002yrs.

What term describes technology that operates on an atomic level

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.