Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation.
MS-LS4-2.
Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.
Watch this video on food webs and how biotic and abiotic factors in an ecosystem are connected.
Amoeba Sisters Video on Food Webs and Energy Pyramids
Food Web Project
Directions:
Create a food web for an ecosystem that is within the State of Maine. For example a forest, field, stream, backyard, saltmarsh, or beach. You are encouraged to choose an ecosystemthat you are familiar with. You should organize your food web so that relationships between organisms are demonstrated (like we did in class).
A good way to start:
Brainstorm organisms within an ecosystem (you should have 15-20)
Place the organisms into groups: producer, consumer, decomposer (click to find more).
Link to Ecology Vocabulary Click here to access Make a copy, Replace "Copy of" with your last name, and move to your science folder.
This article links to the food chain that we completed today in class. It also discusses the idea of invasive species and their impact to an ecosystem in Maine.
Tackling Maine's Pike Problem - Portland Press Herald
MS-LS2.A.2 ( Middle School Life Sciences ): Growth of organisms and population increases are limited by access to resources.
MS-LS2.A.3 ( Middle School Life Sciences ): In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction.
MS-LS2.B.1 ( Middle School Life Sciences ): Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level.
MS-LS2.C.1 ( Middle School Life Sciences ): Ecosystems are dynamic in nature; their characteristics can vary over time. Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations.
Task: You will be researching and writing an informational editorial article on an ecological or biological topic. You should choose a current event that is of high interest to you in order to share your knowledge and enthusiasm with your audience.