Examlex
Scientists use carbon dating to determine the age of fossils. 14C is a rare isotope of carbon that has a half life of 5730 years and decays into 14N. By measuring the amount of 14C remaining in a fossil, scientists can estimate when the organism died to within 60,000 years. The atomic numbers of C is 6 and of N is 7.
-¹⁴C and ¹⁴N have the same
Sample
A portion of the overall population picked for conducting studies or inquiries in order to collect demographic data.
Frequency Polygon
A graphical representation of the distribution of a dataset that shows how often each value occurs, connecting each data point by straight lines.
Frequency Distribution
A summarization of data by reporting the number of observations that fall within each range or bin of values for a specific variable.
Pie Graph
A circular chart divided into sectors, each sector shows the relative size of each value to the total.
Q3: A table of contents is essentially a(n)
Q20: To begin, Sonia and Sam want to
Q27: Energy sometimes appears spontaneously in living systems.
Q47: When you open a new template, Word
Q55: The stage of viral replication in which
Q63: In the Paragraph dialog box, the setting
Q65: Embedding and linking are useful when you
Q75: To perform a more complicated sort, you
Q84: A(n) _ frames the contents of a
Q85: As with theme colors, you can change