Question 4. Now look at all the graphs. Which trait, beak length or wing length, has changed the most in the population over time? Support your answer by describing the change in proportion of the trait over time. Source: Wikimedia Commons/ putneymark Finch Habitat: Ground finches get their name because they get their food by gathering it from the ground. They eat small insects and the fruit and seeds of plants.

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Primate evolution

Primates are a relatively new species and first appeared in the fossil record nearly 55 million years ago. They may have originated as far back as the cretaceous period. Their fossils were observed in North America, Asia, and Europe. Long before the first monkeys and their prosimian relatives developed, most animal species thrived and died. The first primates did not exist until about 50-55 million years ago, even though the planet is 4.54 billion years old and the first life goes back at least 3.5 billion years. Dinosaurs had been extinct for 10 to 15 million years when this happened.