Answer:
After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Explanation:
The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.
Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.
In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
I belive the answer is d. hopefully, I can help you sort out your thoughts and feelings so you can better understand them
Medical practitioner like nurse is trained with various communication skill that might help the patient coping with their disease. Talking to nurse could help the patient sort their thought and feeling better, make them could adapt more easier. The thought and feeling also could be used to determine if the patient have psychiatric symptoms/problem.
Either amino acids or genotypes.
The could walk across wet asphalt and get stuck, creating an imprint over time, or they could have more asphalt put on top of them
