Charles darwin gathered a lot of data about the natural world over a 5 year period as he traveled the coastline of south america and the galapagos islands. which of the following statements explains what he found after analyzing his data?

He found out that there were 14 different species of finches that occupied the islands. Each of them had a different type of beak which helped them because they all ate different types of food. (They had different niches).
Also, he saw how the fittest animals survived. So, the fastest animals will have a greater chance of living longer as opposed to slower ones.
Hope this helps!

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey