When plants are removed from the soil, the nitrogen in that part of the cycle is lost - it needs to be replaced.
1 of 6
Organic and Intensive Farming Differences
Organic farms use natural predators, natural pesticides and crop rotation to rid themselves of pests - intensive farming uses chemicals.
Organic farms use animal waste, manure and crop rotation to help fertilise - intensive farming uses chemicals.
Organic farming is more expensive than intensive farming.
Organic produce is mroe expensive than intensive produce.
2 of 6
Polymers and Digestion
Carbohydrates, made of Oxygen Hydrogen and Carbon, are found in potatoes, museli and bread. The polymers are starch and cellulose, and the monomer is glucose.
Proteins, made of Oxygen Hydrogen Carbon and Nitrogen, are found in meat eggs and fish. The monomers are amino acids.
Excess proteins are transported to the liver to be made into Urea, and then the urea is extracted in the kidneys and put out with urine.
Proteins are used mostly for tendons, but also hair, skin and muscles.
Digestion: food goes through oesophagus, stomach, small intestine, large intestine, poop.
3 of 6
Diabetes
Type 1 is developed in younger people - the body cannot make any insulin. Treated by insulin injections.
Type 2, until recently, mostly developed in older people - the body either can't make enough insulin, or the body stops reacting to it properly. Treated by died, losing weight and exersice.
4 of 6
Food Additives
Colourings - make food look more attractive, replace colours lost in transport.
Flavourings - make food smell and taste better.
Sweetners - make food sweeter so you don't have to use as much sugar and makes the food have less calories.
Antioxidants - stop foods containing fat going off when they react with oxygen - ie sausages.
Preservatives - make the food so that microbes can't grow on it and keeps the food fresher for longer.
Emulsifiers - join oil and water.
Stablilisers - keep oil and water joined.
Additives, other than flavourings, are governed by the EU. They are given and E Number if they pass a safety test.
5 of 6
Safe and Healthy Food
Food can never be risk-free.
It could contain residues of chemicals from pesticides and herbicides.
It could have been contaminated during transport or storage.
It could be cooked dangerously - burned to form HA or PAHs which can cause liver cancer.
You should try to eat healthy- try not to eat food that could contain chemicals, instead eat organic food. Wash, store and cook food properly.
The labels contain information about calories, typse of fat, where the food was produced, and daily recommened amounts of the food.
Comments
Report
Report
Report
Report