Biology Environmental Issues part 21 (Global warming) class 12 XII

TL;DR

Global warming, caused by an increase in greenhouse gases, poses a threat to the environment and the survival of organisms.

Transcript

hello friends this video on environmental issues by 21 is brought to you by exam feel calm no more fear from exam now what happens with too much heating of the earth now as I said now if the amount of greenhouse gases increases too much if they have too many greenhouse gases then what will happen there are too many gases to absorb the infrared radi... Read More

Key Insights

• 🫢 Global warming is caused by an increase in greenhouse gases, primarily carbon dioxide and methane.
• ❓ The average temperature of the Earth has increased by 0.6 degrees Celsius in the last 100 years, with significant implications for ecosystems and organisms.
• 😒 The main causes of global warming are the increased use of fossil fuels, deforestation, and overpopulation.
• 🫠 The harmful effects of global warming include melting ice, rising sea levels, destruction of habitats, increased precipitation, floods, disruption of ecosystems, and changes in climate patterns.

Questions & Answers

Q: What is global warming?

Global warming refers to the increase in Earth's surface temperature due to the action of greenhouse gases, such as carbon dioxide and methane, which trap infrared radiation.

Q: How has the average temperature of the Earth changed in the last 100 years?

In the last 100 years, the average temperature of the Earth has increased by 0.6 degrees Celsius, which may seem small but can have significant implications for the survival of organisms.

Q: What are the main causes of global warming?

The main causes of global warming include the increased use of fossil fuels, which release carbon dioxide, and deforestation, which reduces the absorption of carbon dioxide by trees. Overpopulation also contributes to global warming as it leads to increased resource consumption and pollution.

Q: What are the harmful effects of global warming?

The harmful effects of global warming include the melting of ice glaciers and mountains, leading to an increase in sea levels and the destruction of habitats. It also causes increased precipitation, higher probability of floods, disruption of ecosystems, and changes in climate patterns.

Summary & Key Takeaways

• Global warming is the increase in Earth's surface temperature due to the action of greenhouse gases, which trap infrared radiation.

• The average temperature of the Earth has increased by 0.6 degrees Celsius in the last 100 years, and this increase can have a significant impact on the survival of organisms.

• The main causes of global warming are the increased use of fossil fuels, deforestation, and overpopulation.