Carbon-14 is a radioactive form of carbon. carbon-12 is the most common type of carbon. the ratio of these two atoms stays constant in living things but changes after an organism dies since carbon-14 continues to decay while the amount of carbon-12 remains the same. the half-life of carbon-14 is nearly six-thousand years. if you found a bone that had no measureable amount of carbon-14 in it, what could you conclude about the animal the bone came from? a. it died recently. b. it died less than six-thousand years ago. c. it died more than six-thousand years ago. d. nothing, since more information is needed to answer this question.

What two elements should be in an essay

Cancer, ‘the big c,’ as it is often called. her doctor felt sure but ordered more tests to confirm his suspicion. while cervical cancer in a woman julianne’s age was rare, her doctor admitted, it certainly was not unheard of in her demographic group. her doctor explained that this type of cancer is often caused by a common virus that many women do not even realize they have. the human papilloma virus can lead to this type of cancer if a woman’s immune system does not fight off the virus in its initial stages. julianne was devastated. her doctor began to discuss treatment options and suggested an oncologist specializing in this type of cancer, but julianne heard very little of what he said. her head was spinning with questions. overwhelmed, she wondered how she would break the news to her family and friends. according to the article, a physician specializing in the diagnosis and treatment of cancer is called

3. what is the purpose of a lead sentence or paragraph? to display your most convincing reasons and arguments to you revise the overall structure of your work to interest readers and introduce your writing style to add details and elaborate on your ideas