"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 6

Description

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 6

forest ecosystem

Distribution: Wetter areas

Plants: mainly trees

Animals: Arboreal and Climbing Life

Known as the "green reservoir"

Function: conserve water sources, maintain soil and water

grassland ecosystem

Distribution: arid areas

Plants: Mainly herbs, a few shrubs and trees

Animals: Behavioral characteristics of digging holes or running quickly

Function: important production base for animal husbandry, regulating gas

climate to prevent land desertification.

The biosphere is a unified whole

Every ecosystem is connected to other surrounding ecosystems in many ways.

1. Abiotic factors

Sunlight, atmosphere, water.

2. Regional relationship

Yellow River, Yangtze River

3. Organisms in the ecosystem

Tiny organisms, pollen, and seeds can move with the atmosphere. Animal movement, human activity.

summary

The biosphere is not only the home of each of us, but also the common home of all living things. Once human activities destroy the biosphere and make it impossible to recover, then the creatures on the earth, including us humans, will not be able to survive. Therefore, the earth is not only for us humans, It is also the home of beautiful plants and lovely animals. We must protect the biosphere.

Class exercises

1. The ecosystem with the greatest automatic adjustment capability is ( ).

A. Tropical rainforest B. boreal forest

C． Temperate deciduous forest D. savanna

2. In the following examples, what causes ecological crisis through the food chain is ( ).

A. Acid rain b. Accumulation and concentration of toxic substances such as mercury and cadmium

C. Greenhouse effect D. Ozone decreases and holes appear in the ozone layer

3. On Earth, the largest ecosystem is ( ).

A. Forest ecosystem B. grassland ecosystem

C. Marine ecosystem D. biosphere

4. In a grassland ecosystem, the largest number is ( ).

A. Sheep b. Gramineae C. wolf d. mouse

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"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 9:

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 9 1. Scope of the Biosphere Is there life everywhere on the earth? It is impossible for living things to exist inside the earth's crust. The place on earth suitable for biological survival is actually only a thin layer on its surface...

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 8:

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 8 Ask students to self-study the content on page P2830 of the textbook to understand the types of ecosystems. Forest ecosystem distribution: humid areas. Characteristics: Plant and animal species ________, complex and stable structure. ..

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 7:

"The Biosphere is the Largest Ecosystem" Understanding the Biosphere PPT Courseware 7 1. Scope of the Biosphere Concept of the Biosphere: The sum of all living things on the earth and their environment is called the biosphere. 1. Thickness of the biosphere: about 20 kilometers 2. Scope of the biosphere: the bottom of the atmosphere..

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Update Time: 2024-10-20

This template belongs to biology courseware People's Education Edition seventh grade biology volume 1 industry PPT template

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