What is one of the first things that is done when bones are discovered

The first thing to do is carbon dating, to find out how old these bones are.

Explanation:

Carbon dating is done by a technique called "Carbon-14" and is performed when a skeleton is found to determine how many years have passed since the death of that organism. This technique allows the years of this skeleton to be counted, because living beings are rich in carbon molecules in their composition. When an individual dies, the carbon-14 molecule in its composition dies too, so dating that molecule allows you to date how long that organism has been dead.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.