Food Decay and Preservation
Bacteria and fungi are the main groups of decomposer organisms. Food decay is also known as food spoilage.
Bacteria and fungi need Food , Warmth and Moisture to grow.
There are several ways to stop or slow down the decay of foods. This is known as Food Preservation.
Food preservation methods
Bacteria cannot reproduce at low temperatures.
Bacteria and fungi need warmth to grow. In low temperatures they stop growing.
Following is the list of food preserved by freezing;
- Fresh foods
- Cooked foods
Removing water prevents the microorganisms from growing, or digesting the food.
Our wonderful body
Lets brush up on the basics first. The class 1 lessons will give a nice overview of our body.
Human beings: Parts of the body
Human Beings : Clothes we wear
Human beings :Healthy foods
Human beings : Sense organs
Human Beings and their needs Worksheets
Type of organs
External organs :
Parts of our body that we can see.
Head, skin, arms, legs, eyes , ears , nose , tongue etc
Skin in the biggest organ of our body
Sense organs are also external organs and they comprise of Nose (smell), Eyes(sight), Ears (hearing),
Tongue (taste), Skin (touch)
Internal organs :
Parts that are inside our body
Brain, heart, lungs, stomach etc
Benefits of healthy food items