"Change the Ecological Bottle" Biology and Environment PPT

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"Change the Ecological Bottle" Biology and Environment PPT

Part 1: Reduce the water in the ecological bottle

Pour out half of the water in the ecological bottle and keep the number of organisms in the ecological bottle unchanged. What changes will happen to the organisms in the ecological bottle?

Record the number of times the small fish in the ecological bottle float to the surface in one minute when there is more water and when there is less water, and analyze the reasons for this phenomenon.

Due to the reduction in water volume, the living space for animals and plants is reduced, and the amount of oxygen in the water is reduced. In ecological bottles with less water, small fish float to the surface more often.

Changing the ecological bottle PPT, part 2: increasing the creatures in the ecological bottle

Choose two ecological bottles, double the water plants in one ecological bottle, and double the small fish in the other ecological bottle. Predict what will happen in the ecological bottle.

Record the number of times the small fish in the ecological bottle float to the surface in one minute when there are many animals and when there are few animals, and analyze the reasons for this phenomenon.

Doubling the amount of aquatic plants will increase the amount of oxygen produced, and the number of times the small fish will surface in the ecological bottle will decrease; doubling the number of small fish will increase the oxygen consumption, and the number of times the small fish will surface in the ecological bottle will increase.

What will happen if the number of small fish in the ecological bottle is doubled? What about a 4-fold increase?

Small fish surface more and more often and even die from lack of oxygen.

Is it true that the more plants in an ecological bottle, the better?

Too many plants will affect the absorption of light by plants and reduce the space for animals to move.

Any other thoughts on the changes happening in the eco-bottle?

A balanced eco-bottle is a stable ecosystem with reasonable proportions of components. The organic matter produced by producers is sufficient for consumers, and consumers can provide sufficient nutrients to producers. In such an environment, just continuously injecting energy into the ecosystem can ensure the healthy operation of the system.

According to experiments, what should we pay attention to if we want the creatures in the ecological bottle to live better?

The number and type of organisms should be balanced

There must be enough oxygen

Ensure adequate lighting

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"Change the Ecological Bottle" Biology and Environment PPT Download:

"Changing the Ecological Bottle" Biology and Environment PPT Download Part One: Collaborative Exploration 1. Reduce the Water in the Ecological Bottle Questions raised If there is less water, what will happen to the animals in the ecological bottle? It is speculated that the number of times the animals in the ecological bottle float to the water will change...

"Change the Ecological Bottle" Biology and Environment PPT Courseware 4:

"Changing the Ecological Bottle" Biology and Environment PPT Courseware 4 Teaching Objectives 1. Be able to explain that reducing water and adding animals and plants will cause changes in the ecological community. 2. Experience the experiment of changing the organisms and water in the ecological bottle to cause changes in the ecological community. Reduce the water in the ecological bottle..

"Change the Ecological Bottle" Biology and Environment PPT Courseware 3:

"Changing the Ecological Bottle" Biology and Environment PPT Courseware 3 What role do plants play in the ecological bottle? Provide oxygen and food to animals. What role do animals play in the ecobottle? Provides nutrients and carbon dioxide to plants. ... ... ... Assumption: 1L water...

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Update Time: 2024-11-19

This template belongs to science courseware Fifth Grade Science Volume 1, Textbook Edition industry PPT template

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