10.  Classify the ecological interactions described:  The population of birds getting the same food in a small pond.

The ecological interaction described here is "Competition". This is because the population of birds are all trying to get the same food in a small pond, which means they are competing with each other for the same resources.

Here are the steps to classify this interaction:

1. Identify the organisms involved: In this case, it's a population of birds.
2. Determine the resource or condition that is the subject of the interaction: Here, it's the food in a small pond.
3. Assess the effect of the interaction on the organisms: The birds are competing for the same food, which could potentially limit their population growth if the food source becomes scarce.
4. Based on these factors, classify the interaction: As the birds are of the same species and they are competing for the same limited resource, this is an example of intraspecific competition.