Ecology question 1

Identify biotic and abiotic characteristics in an ecosystem.


Biotic factors: 


Interactions between the living organisms in the ecosystem. 


1) Predator-prey relationship : A living organism eats another living organism for energy. Period of interaction is very short. E.g. The lion hunts down a deer for food.


2) Parasitism : One organism benefits but another organism is harmed. Period of interaction is longer. E.g. Fleas live on the skin of dogs to suck their blood.


3) Commensalism : One organism benefits and the other organism is not harmed. Period of interaction is longer. E.g. Remora fish gets free transport from a shark by attaching to it and feed on the food scraps. Sharks are not harmed.


4) Mutualism : Both organisms benefit. Period of interaction is longer. E.g. Pollination of flowering plants.   


Abiotic factors:


1) Light : 
2) Temperature :
3) Air :
4) Water :
5) PH level :
6) Soil:






    

Pic 5 19/4/12

This condition is called Keratomalacia. It is a disease caused by a deficiency in vitamin A. This person should eat more yellowy food such as papaya, carrots and pumpkins.

Pic 6 19/4/12

This person suffers from Pellagra. Pellagra is a disease which means there is a lack of Niacin[B3]. He/she would need to eat food that is rich of niacin such as tuna, chicken and salmon.

Pic 3 19/4/12

This guy suffers from beriberi. Beriberi is a disease in which the body has a lack of thiamin[B1]. He would need to eat food that contains a rich amount of thiamin such as nuts, brown rice and fish.

sources 19/4/12

http://www.imageenvision.com/photo/6769-picture-of-a-child-with-kwashiorkor-disease-from-severe-dietary-protein-deficiency-by-kapd [IMAGE ENVISION]

http://www.livestrong.com/article/493704-food-diet-for-those-who-have-kwashiorkor/ [LIVESTRONG.COM]

http://health-care-you.blogspot.com/2009/03/health-care-nutrition-rickets.html[HEALTHCARE NUTRITION]

http://nutritiondata.self.com/foods-000102000000000000000.html[

http://www.tutorvista.com/content/biology/biology-i/human-diseases/nutritional-disorders.php[TUTORVISTA.COM]

http://www.livestrong.com/article/77597-list-foods-iodine/[LIVESTRONG.COM]

http://www.medicalnewstoday.com/articles/155758.php[MNT]

http://arias-yakuza.blogspot.com/2011/12/obesity-dangers-to-your-health.html[YAKUZA BLOG]

http://www.medicinenet.com/anorexia_nervosa/article.htm[MEDCINE NET.COM]

http://library.thinkquest.org/TQ0312847/obesity.htm[ORACLE]

http://rambio2011.wikispaces.com/6c_Dietary+Related+Diseases[WIKISPACES]

http://nutritiondata.self.com/foods-000102000000000000000.html[NUTRION DATA]

http://www.buzzle.com/articles/thiamine-rich-foods.html[BUZZLE.COM]

http://www.nlm.nih.gov/medlineplus/ency/article/000339.htm[MEDCINEPLUS]

Pic 9 19/4/12

This lady suffers from anorexia. Anorexia is an eating and phycological disorder, and also means a deficiency of food. The person is dieting to lose weight. She should eat more healthy food.

Pic 8 19/4/12

This person suffers from obesity. He/she should eat fresh fruits and vegetables and low-fat milk and also

exercise more.