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

Description

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

What role do plants play in eco-bottles?

Provide oxygen and food to animals.

What role do animals play in the ecobottle?

Provides nutrients and carbon dioxide to plants.

Assume

Assumptions:

There are about 10mg of oxygen in 1L of water, which is enough for 5 small fish to live normally for 2 hours.

Now pour out half of the water and there will be 5 mg of oxygen in 0.5L of water. How long can five small fish live normally?

experiment

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

Observe and record: the number of times the small fish float to the surface in one minute when there are many animals and when there are few animals.

Increase the number of creatures in the ecological bottle

What will happen if you choose one of the ecological bottles and double the amount of water plants?

What will happen if you choose another small fish with twice the size of the ecological bottle?

Record our observations.

think

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

2. In order to make the creatures in the ecological bottle live better, what should we pay attention to?

3. What other thoughts do we have about ecological bottles?

Too many plants will affect the absorption of light by plants, and will also reduce the activity space of animals, which will also have adverse effects.

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For more information about the "Biology and Environment Change Ecological Bottle" PPT courseware, please click the Biology and Environment ppt Change Ecological Bottle ppt label.

"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:

"Changing the Ecological Bottle" Biology and Environment PPT Part One Content: 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. Predict what changes will happen to the organisms in the ecological bottle? Record the small fish in the ecological bottle in the water...

"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..

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Update Time: 2024-09-24

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

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