Biology- e-learning portal --Ecology, habitats & evolution

Hi Students,

Here is the sixth list of sites you can go to to learn science in a fun way.
The site is good for quick revisions and introductions to the topics.


Topic: Ecology, habitats & evolution

1 compétition for ressources
http://kerala.skoool.in/content/KS3%20LOs/biology/competition_resources/index.html

2 habitats
http://kerala.skoool.in/content/KS3%20LOs/biology/habitats/index.html

3 studying habitats
http://kerala.skoool.in/content/KS3%20LOs/biology/habitats_studying/index.html

4 interdependence
http://kerala.skoool.in/content/KS3%20LOs/biology/interdependence/index.html

5 population size
http://kerala.skoool.in/content/KS3%20LOs/biology/pop_size/index.html

6 adaptation and survival
http://kerala.skoool.in/content/ks3%20LOs/biology/adap_survival/index.html



Cheers

Denis Dutton: A Darwinian theory of beauty

Hi,

How do we feel beauty?
What is considered beautiful?

TED collaborates with animator Andrew Park to illustrate Denis Dutton's provocative theory on beauty -- that art, music and other beautiful things, far from being simply "in the eye of the beholder," are a core part of human nature with deep evolutionary origins.



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Baba Brinkman-Learn about human evolution through rap?

Hi,

Baba Brinkman is a Canadian actor and rap artist and former tree‑planter who has personally planted more than one million trees. Baba has received international acclaim for his rap comedy theatre shows, which cover topics as diverse as evolutionary psychology, the Canterbury Tales, democracy, and civil disobedience. Last year he won the Scotsman Fringe First Award at the Edinburgh Fringe for his "Rap Guide to Evolution," which is transferring to New York in 2011. When he is not on tour, Baba resides in his hometown of Vancouver.



"Worst comes to worst" by Dilated People



"Survival of the fittest" by Mobb Deep


Cheers

Methods in Biology by Leislie Samuel

Hi,

Watch the two videos below by Leslie Samuel teach characteristics of living things:
1-organisation
2-reproduction
3-growth and development
4-adjusting to the environment
5-adaptation and evolution




Part 2, Methods in biology:



cheers

Celebrate your skin colours

Hi,

This intriguing video explains why dark skinned people originate from equatorial countries such as Africa, India and South East Asia.

Melanin is a pigment molecule that give the dark colour to skin. It evolved by natural selection to cut out harmful UV radiation from the sun. It is a natural sunscreen.

However there has been much migration of light skinned people from low UV places to high UV places and vice versa. UVB light is important to make vitamin D in our skins. However, dark skinned people in the countries nearer to the poles are not getting enough of it and this will lead to serious health consequences such as bone and teeth problems, reduced immune system, mood and mental health problems.

Also dark skinned people who work at desk jobs should be aware of these health risks.

Light skinned people have less melanin and so they run the risk of skin cancer due to excessive UVB damaging their DNA. Lighter skin colour is a product of evolution by natural selection in a latitude that gets very little UVB light.






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Colour evolution in fruit flies

Hi,

Ugandan fruit flies have changed colour, according to scientists. Researchers have reported in the journal Science that genetic mutations have caused the flies to evolve darker colouration, which they believe helps the creatures adapt to higher altitudes.

Global warming allows organisms that adapt to live at higher altitudes. Everyone knows that the temperature drops as one goes up the mountains. As global warming occurs, the temperatures at higher altitudes also warms up and organisms that used to live in the valleys can now colonise the slopes of the mountains.

Source: Science Journal

Cheers