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"Maintaining Ecological Balance" Biology and Environment PPT Courseware
Recall, what is an ecosystem?
Ecosystem: Living things and non-living things interact and depend on each other to form an inseparable whole.
Ecological community: organisms in a certain area in nature form a balanced and harmonious whole
What is the difference between an ecosystem and an ecological community?
Can you tell their relationship with food?
What would happen if there were fewer eagles?
What would happen if there were fewer rabbits?
What will happen if there is less grass?
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"Maintaining Ecological Balance" Biology and Environment PPT download:
"Maintaining Ecological Balance" Biology and Environment PPT Download Part One Content: Collaborative exploration Taking eagles, rabbits, and grass as examples to explore the ecological balance of the grassland and the food relationship between the three. Imagine: What would happen if there were fewer eagles? ? If there are fewer rabbits,...
"Maintaining Ecological Balance" Biology and Environment PPT:
"Maintaining Ecological Balance" Biology and Environment PPT Part One: Eagles, Rabbits, and Grasses If we go to the grassland, we will find that eagles, rabbits, and grasses that rabbits like to eat live there. Let's draw the food chain between the hawk, rabbit and grass. Grass Rabbit Eagle If Eagle..
"Maintaining Ecological Balance" Biology and Environment PPT Courseware 4:
"Maintaining Ecological Balance" Biology and Environment PPT Courseware 4 Knowledge Points: This chain-link-like food relationship between organisms is called a food chain. The same kind of plant will be eaten by different animals, and the same kind of animal can eat different foods. The complex food relationship between living things forms...