Jolly's 8th Grade Science

CURRICULUM UPDATE

Ecosystems

Ecosystems include all the biotic (living) and abiotic (nonliving) factors in an environment. This unit asks students to examine and understand interactions that occur in an ecosystem and how organisms compete with limiting factors for survival. Students learn that energy, as a form of food, is lost from one organism to another through heat and highest organism (apex predators) on the food chain must consume the most amount of food to survive.

ESSENTIAL QUESTIONS

These are the questions we want student learners to be able to answer and explain by the end of the unit.

1. How can factors such as food, water, shelter and space affect populations in their environment?
2. How do positive and negative interactions shape the relationship between producers, consumers and decomposers?
3. How does the transfer of energy and the matter affect organisms and their environment?
4. How does genetic variation enable organisms to adapt to their environment?
5. How do organisms use food to gain nutrients needed for survival?

ECOSYSTEM VOCABULARY

Producers, consumers, decomposers, abiotic factor, biotic factor,habitat, limiting factor, ecosystem, community, population, species, symbiosis, symbiotic, relationship, mutualism, parasitism, commensalism, predation, competition, food web, aquatic food chain, terrestrial food chain, nitrogen cycle, carbon cycle, autotroph, heterotroph, ecological and energy pyramid.

Students can practice for mastery with Quizlet and Jeopardy games posted on Moodle.

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