Main environmental problems faced by mankind PPT template download

Description

This is a set of PPT templates on the main environmental issues faced by mankind, with a total of 24 pages;

The PPT template cover uses background pictures of blue sky and white clouds, green city silhouette, cleaners and trash cans. Fill in the PPT title of the main environmental problems faced by mankind in the middle. The interface style is green and fresh, matching the environmental protection PPT theme.

The content page of the PowerPoint template consists of 22 green dynamic slide charts and PPT text layout. In addition, multiple illustrations of environmental pollution are used for decoration.

Introduction to the PPT content of the main environmental problems faced by mankind:

1. Concepts and types of environmental problems

What are environmental issues?

Environmental damage or environmental degradation occurs when humans over-exploit and utilize resources and the environment, thereby endangering the survival and development of humans and other organisms.

Causes of environmental problems

Since the industrial revolution, industry and agriculture have developed rapidly (causing serious environmental pollution and ecological damage)

With the rapid growth of population and rapid economic development, the demand for resources is increasing day by day, and the shortage of certain resources is becoming increasingly obvious.

Resource and environmental issues threaten human survival and sustainable development

Rapid population growth, irrational use of resources, and one-sided pursuit of economic growth

Issue: Causes, manifestations and hazards of environmental pollution

Reason: Human beings arbitrarily discharge waste and harmful substances

Performance: air pollution, water pollution, ocean pollution, soil pollution, solid waste pollution, noise pollution, radioactive pollution, etc.

Harm: It has a direct impact on human health and even affects human survival and development.

2. Main environmental problems faced by mankind

According to nature:

Environmental pollution, ecological destruction, depletion of natural resources, and problems evolved from environmental pollution.

By geographical space:

Global environment, regional environment, local environmental issues.

According to environmental factors:

Air, water and soil pollution.

According to production type:

Industrial environment, agricultural environment, and living environment issues.

3. Public hazard incidents that cannot be forgotten

Smoke incident in Maas Valley

In Belgium's Maas Valley industrial area in 1930, due to the combined effects of sulfur dioxide and dust pollution on the human body, nearly 60 people died within a week and thousands suffered from respiratory diseases.

Los Angeles photochemical smog incident

In 1943, in Los Angeles, the city's more than 2 million cars emitted a large amount of vehicle exhaust every day, which produced photochemical smog under ultraviolet irradiation. A large number of residents suffered from symptoms such as red and swollen eyes, watery eyes, and sore throats, and the mortality rate increased significantly.

London smog incident

From December 5th to 8th, 1952, there was high pressure over the city of London, heavy fog shrouded the city, and there was no wind for days. A large amount of coal was burned for heating, and soot, dust and moisture accumulated in the atmosphere. More than 4,000 people died. In the next two months, another 8,000 people died one after another.

Minamata Bay Incident

From 1953 to 1956, in Minamata City, Kuma Prefecture, Japan, mercury-containing wastewater was discharged from petrochemical plants. People ate fish, shrimp, shellfish and other aquatic organisms that were contaminated with mercury and enriched with methylmercury, causing central nervous system poisoning in a large number of residents. The mortality rate reached 38%, and 238 people were poisoned by mercury, of which more than 60 died.

This template is suitable for making environmental protection publicity PPT, World Environment Day PowerPoint, etc. .PPTX format;

File Info

Update Time: 2024-10-19

This template belongs to PPT download environmental protection industry PPT template

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