How many half-lives did the rock go through? 4. If a rock had 40 daughter atoms present, how old would the rock be?

Short answer/constructed response: respond to the question in 3-5 complete sentences. give details or examples to support your answer. attempt to answer all parts of the question in paragraph form! using the source 1 map, pick two of the 1800's territorial acquisitions you believe were the most important in the development of the united states. provide at least two reasons per territory to explain why you think they were the most important.

Unlike other andean nations, chile has a relatively small population of mestizos people of european descent indians people of asian descent

Which phrase describes the time it takes for a planet to make a complete rotation