If the half-life of uranium-235 is 700 million years and you have 16 atoms of it, how many half-lives (700-million-year units of time) will pass before only 1 atom of uranium-235 is left? A. 6
B. 7
C. 5
D. 4​

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

Which statement best describes the role of religion and culture in ancient medicine?