The frequency of a certain trait in a population of beetles will increase over time if - there is variation in that trait within the population.
beetles possessing the trait produce more offspring
the trait is not linked to the genetic makeup of the beetle.
it creates a specialization to a specific food source.

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3