Today we continued watching the "How Many People Can Live on Planet Earth" video.
1. According to the video, who or what might be the biggest threat to planet Earth?
Ourselves.
2. What effects does overpopulation have on Earth?
There will be less food, global warming, less paying jobs (more poverty.)
3.How does world population growth effect water, food and energy?
There is going to be less resources.
here is the world's population data held?
New York City.
5. What is the United Nations?
A peace keeper.
6. How many people will live on Earth by 2050?
9 Billion.
7. Where is the greatest population growth going to take place?
Niger.
8. What has kept the world's population in check for most of human history?
Disease, and lack of food and water because of droughts.
9. Why did the population boom starting in 1800?
We had better medicines then.
10. What did Malthus say the problem of population growth is?
Demand for food will outstrip the production of food.
11. How many people lack access to safe drinking water in the world?
Over a billion. 70% of the Earth is water. 2% of that is freshwater and only 1% of the 2 is available to us.
12. What is the importance of water to people and Earth?
To survive. Plumbing, animals, crop irrigation. They also use it to make things likeclothing or anything in factories.
13. Why not just desalinate sea water?
It is extremely expensive, the byproducts are harmful to the sea, and it uses a lot of energy.
14. What did Iowa farmer Norman Borlaug do that helped the world's food supply?
He taught the poorer countries a faster way to do cropping.
15. What are some developed countries doing in developing countries in regards to farming?
16. According to the host of the video, what three things must people do to ensure that future generations have enough food and resources?
17. What did China and India do in the 1970's to try to reduce population? Which country was successful?
18. What two things are very important to women(and men as well) in helping bring down the fertility rate?
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