In this lesson you explored the following essential questions:

• What can observations on biotic and abiotic factors gathered in a field study tell you about an ecosystem?
• How do human activities affect ecosystems?

In order to answer these questions, you had to conduct a field study. Once you chose what ecosystems to study, you had to choose tools that would help you gather information about the ecosystems. It was important to distinguish between accuracy and precision. You also had to identify dominant species in your ecosystems and explain their niches.

 Assessments

Complete Unit B: Section 2 Assignment now. Start your Field Study Assignment now if you haven't already.