"Environmental Issues and Our Actions" Environment and Us PPT Courseware 2

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"Environmental Issues and Our Actions" Environment and Us PPT Courseware 2

What problems do we currently face with our use of water resources?

Water shortage is an indisputable fact. Population growth, environmental pollution, etc. are all consuming our freshwater resources. The phenomenon of water waste and water pollution in the process of utilizing water resources is very serious.

What sources does water pollution come from?

Water pollution mainly comes from agriculture, industry, life, etc.

Where does the water we can use come from?

Water in most areas is obtained from reservoirs, lakes, or rivers.

What are the three steps of wastewater treatment?

Precipitation - filtration - drug sterilization

Read the text on pages 86-88 and solve the following questions.

1. What are the sources of air pollution? What are the dangers of air pollution? How should we solve air pollution?

2. What is “white pollution”? How should we deal with white pollution?

3. What is the reason for the accelerated rate of species extinction? For this reason, what should humans do so that humans and nature can live in harmony?

Air Pollution

The main source of air pollution is the use of fossil fuels in our industries and daily life. Factory chimneys, car and airplane exhaust.

Air pollution can easily cause respiratory diseases in animals and humans and affect plant growth.

In order to deal with the problem of air pollution, we must use less fossil fuels and develop more green energy. Use public transportation whenever possible.

White pollution

White pollution refers to the garbage problem caused by difficult-to-handle plastic products that are difficult to process due to their light weight, large size, large quantity, and easy drifting.

For this reason, we should use as little refractory plastic products as possible and use degradable materials to replace refractory plastic products.

Species extinction is accelerating

Due to human indiscriminate hunting and over-exploitation, many biological resources are on the verge of exhaustion. In addition, environmental pollution is also an important reason for species extinction.

We can set up nature reserves and enact laws to strictly prohibit overhunting and logging. Planned utilization of natural resources, etc. to protect the fragile ecosystem.

Our country has Jiuzhaigou, Changbai Mountain, and Sichuan Wolong protected areas.

In addition to environmental problems such as garbage problems, water pollution, air pollution, white pollution, and accelerated species extinction, what other environmental problems do you know we are facing?

Global Warming: Deforestation of green vegetation due to excessive use of fossil fuels. The concentration of carbon dioxide in the air is too high, causing a greenhouse effect, causing a series of problems such as an increase in the global average temperature, melting glaciers, and rising sea levels.

Indoor air pollution: Building decoration materials, smoking, etc. release harmful gases or dust that affect human health.

Ozone Hole: Destruction of the earth's armor (ozone layer) due to the emission of substances that decompose ozone, such as Freons and halons. Causes a series of environmental problems caused by excessive ultraviolet radiation to the earth.

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"Environmental Issues and Our Actions" Environment and Us PPT download:

"Environmental Issues and Our Actions" Environment and Us PPT Download Part One: Exploring New Knowledge Air Pollution Air is an earth resource that we need every moment in our lives. While industry and urban development create wealth for mankind, they also consume billions of tons of...

"Environmental Issues and Our Actions" Environment and Us PPT:

"Environmental Issues and Our Actions" Environment and Us PPT Part One: Atmospheric Pollution Air is an earth resource that we need every moment in our lives. While industry and urban development create wealth for mankind, they also discharge billions of tons of waste gas and waste.

"Environmental Issues and Our Actions" Environment and Us PPT Courseware 3:

"Environmental Issues and Our Actions" Environment and Us PPT Courseware 3 What is air pollution? Air pollution usually refers to the entry of certain substances into the atmosphere due to human activities or natural processes, showing sufficient concentration for a sufficient period of time, and thus harming human beings..

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Update Time: 2024-09-30

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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