Darwin's Theory of Evolution/Absolute Dating

In 1831, Darwin set sail on a scientific expedition on a ship called the HMS _____

Darwin's most important observations were made on the _____ islands.

Lamarck developed the idea known as the inheritance of _____ characteristics.

The _____ Darwin found helped convince him that species change over time.

The term _____ refers to an organism's ability to survive and produce fertile offspring.

_____ paper on evolution confirmed Darwin's ideas.

_____ said that Earth must be far older than most people believed.

Darwin was influenced by his knowledge of artificial _____.

Darwin proposed that _____ selects the variations in organisms that are most useful.

The Galapagos Islands are known for having giant _____ with differently shaped shells.

From Malthus, Darwin knew that populations could grow faster than their _____.

Darwin's theory of evolution unifies all of _____.

A sample originally had 160 grams of Carbon-14. After 11,460 years, only 10 grams of Carbon-14 remain. What is the half-life of Carbon-14?

A scientist discovers that a sample of phosphorus-32 has decayed to 12.5% of its original amount. If the half-life of phosphorus-32 is 14.3 days, how old is the sample?

A paleontologist finds a fossil and determines it contains 3.125% of its original carbon-14. The half-life of carbon-14 is 5730 years. How many half-lives have elapsed since the organism was alive?