Carbon 14 has a half life of 5730 years, if the atmosphere has 10,000 parts per million of carbon, how many years old is a fossil with 2,500 parts per million?

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

Which is the best example of plant tissue? the answer is d (just took the test)