Populations and Ecosystems Review Today you will review all topics that you’ve learned in this unit. Read through the list of topics from this unit. Make sure that you feel confident about each of them before taking the unit test. If there are any topics that you forget or think you need to practice, go back and review those lessons now: using modeling to understand resource scarcity and competition understanding how resource scarcity and competition impact populations explaining how changes to abiotic components of ecosystems affect populations explaining how changes to biotic components of ecosystems affect populations understanding how human actions affect populations in positive and negative ways using evidence to support a claim about how changes in ecosystems affect populations Populations and Ecosystems Reflect Write a reflection about your learning in this unit. Your reflection should be at least three sentences. Use the following sentence starters as a guide: I learned new information about… The most challenging thing to understand was… I feel confident about using evidence to support a claim about… In order to remember definitions of vocabulary words in this unit, one strategy I used was... The most interesting information I learned was... Study Tips Are there any topics that you need to go back and review? Use the following tips while studying: Review your results on previous assessments in this unit. Make flashcards to test yourself on vocabulary words and their definitions. Review the photos in the lessons to remind yourself about the populations and ecosystems you studied. Use beads or beans to demonstrate effects of various changes on populations for a friend or family member. Review the videos to remind yourself of main ideas and important terms. Read over any writing you did in the lessons.

I learned new information about how resource scarcity and competition impact populations. The most challenging thing to understand was how changes to abiotic components of ecosystems affect populations. I feel confident about using evidence to support a claim about how changes in ecosystems affect populations. In order to remember the definitions of vocabulary words in this unit, one strategy I used was creating flashcards to test myself. The most interesting information I learned was how human actions can affect populations in both positive and negative ways.