2. What was the primary cause of the split between the stream dwelling and highland finch populations? A) A preference for different types of food. - B) A storm that physically separated the groups. - C) Competition between individuals. 0)Genetic mutations in one part of the population.

## Step 1<br />The question is asking for the primary cause of the split between the stream-dwelling and highland finch populations. The options provided are: A) A preference for different types of food, B) A storm that physically separated the groups, C) Competition between individuals, and D) Genetic mutations in one part of the population.<br /><br />## Step 2<br />The primary cause of the split between the stream-dwelling and highland finch populations is due to a storm that physically separated the groups. This is a classic example of allopatric speciation, where a physical barrier (in this case, a storm) separates a population into two groups. Over time, these groups may evolve differently due to the different selective pressures in their respective environments, leading to the formation of two distinct species.