Marine Biology Textbook 2nd EditionView Sample Apologias Marine Biology Textbook is one of the few homeschool science courses that include an entire education on ecology. It gives students self directed learning tools to ensure that they thrive and master key science concepts. God designed the earths intricate ecosystem for his glory and the needs of those He created, and it is crucial for Christians in our day to accurately understand the oceans ecosystems and resources and how we can