Unit D: Changes in Living Systems
Completion requirements
Unit D: Changes in Living Systems
 Figure 1: winter logging operation. CC0
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This unit tells a story about the stewardship of natural resources and species survival. The story takes stewardship from the local level within an ecosystem all the way to the biosphere. Included is the idea of species survival. You will consider species survival in response to the unintended consequences of human activities from the recent past. You will also consider species survival within the natural environment over vast geological time spans. In following this story of stewardship and species survival, you will describe the mechanics of energy flow and nutrient recycling and study the interrelationships and interactions of organisms.
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This unit is mostly knowledge based. There are things to remember and understand, rather than skills you need to learn. Making notes is a great learning activity, and it is recommended for this unit. Before making a note you need to read and understand a concept, see how the idea fits with what you are learning, then condense it and write it in your own words, using the new terms. If you are really doing this when making notes, your brain uses the new information a lot, and you tend to remember it. In the end you have a condensed version of what you need to know. Use the Lesson Targets to identify the most important information.
Remember, this is the first unit you will study and you will be tested on it in several months, so it would be nice to have notes to review.
- Read the Unit D introduction on pages 402 and 403 of the textbook.
