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Global WarmingLoading...
BYKELSEY FESTER
GRADE 11
Humans need food to survive and most of the food we eat comes from the agricultural sector. This sector of the economy is under enormous strain in recent years caused by the following factors:
a. Global warming
b. El Nino
c. Bad farming practices
We will look more closely at Global Warming in this book.
a. Global warming
b. El Nino
c. Bad farming practices
We will look more closely at Global Warming in this book.
What is it and how is it caused?
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRDDtIVV3uqX6Pf2QEsqY7V0j4GNEQEHm9fF-XQZpNNETzrvbCuqQ
The graph shows us how the Earth's temperatures have been steadily rising over the years. There has been a definite increase in temperatures and this is known as Global Warming or Climate Change
Watch the video on the next page carefully to fully understand what this means.
Watch the video on the next page carefully to fully understand what this means.
This video by National Geographic will help you understand the concept of Global warming
Definition of global warming:
1. an increase in the air temperatures over the last couple of centuries
2. a change in weather patterns such as temperature and precipitation which directly influences the climate in different regions of the Earth
3. an increase in the average temperatures by 1,1 degrees mostly caused by Human activities
1. an increase in the air temperatures over the last couple of centuries
2. a change in weather patterns such as temperature and precipitation which directly influences the climate in different regions of the Earth
3. an increase in the average temperatures by 1,1 degrees mostly caused by Human activities
One of the main causes of Global warming is The Greenhouse Effect
What is the Greenhouse Effect?
The Greenhouse effect is a natural process whereby the Sun's energy(heat) is reflected form the surface of the Earth back into the atmosphere where some of it is captured to keep the Earth warm. The heat is captured by greenhouse gases such as carbon dioxide and methane.
So greenhouse gases are natural and needed. However, human activities in the last couple of centuries has caused an over abundance in greenhouse gases in the atmosphere. The burning of fossil fuels and other air pollution is results in too much greenhouse gases in the atmosphere. This results in too much heat from the Sun being caught in the atmosphere and this is causing the Earth to heat up!
The Greenhouse effect is a natural process whereby the Sun's energy(heat) is reflected form the surface of the Earth back into the atmosphere where some of it is captured to keep the Earth warm. The heat is captured by greenhouse gases such as carbon dioxide and methane.
So greenhouse gases are natural and needed. However, human activities in the last couple of centuries has caused an over abundance in greenhouse gases in the atmosphere. The burning of fossil fuels and other air pollution is results in too much greenhouse gases in the atmosphere. This results in too much heat from the Sun being caught in the atmosphere and this is causing the Earth to heat up!
Polar caps are melting
Animal migration patterns are changing
Extreme weather patterns such as colder winters and warmer summers
An increase in temperatures is the one effect that everybody is noticing
These are some of the effects of global warming on our planet but the way it will affect people is probably the worst of all.