Question

write an essay a 7th grader would write of all these topics.

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.

Answer 1

[AI-generated answer — Bot GPT 3.5]

In this unit, we learned about populations and ecosystems. One topic we learned about was using modeling to understand resource scarcity and competition. This means that we can use models to help us understand why there might not be enough resources for all the organisms in an ecosystem and how that can lead to competition among them. Another topic we learned about was how changes to abiotic components of ecosystems affect populations. Abiotic components are things like temperature, water, and sunlight. If these things change, it can affect the populations of organisms in the ecosystem. We also learned about how changes to biotic components, which are living things like plants and animals, can affect populations. If there are changes to the plants or animals in an ecosystem, it can have an impact on the populations of other organisms. We also learned about how human actions can affect populations in positive and negative ways. For example, if humans protect a certain animal species, it can help their population grow. But if humans pollute a water source, it can harm the populations of organisms that rely on that water. Lastly, we learned about using evidence to support a claim about how changes in ecosystems affect populations. This means that when we make a claim about how something in an ecosystem is affecting populations, we need to have evidence to support it. In order to remember the vocabulary words in this unit, I made flashcards to test myself. I also reviewed the photos in the lessons to help me remember the populations and ecosystems we studied. The most interesting information I learned was how human actions can have both positive and negative impacts on populations. It made me realize how important it is for us to take care of our environment.