Question

2. Which are the three layers
3. What is a balanced diet?
4. Where does the digested
nswer these questions (An
What is preservation?​

Answer 1

2) Earth can be divided into three main layers: the core, the mantle and the crust. Each of these layers can be further divided into two parts: the inner and outer core, the upper and lower mantle and the continental and oceanic crust.

3)a diet consisting of a variety of different types of food and providing adequate amounts of the nutrients necessary for good health.

4) The process of treating food in order to slow down spoilage is called as food preservation. a) Chemical method of preservation is done by adding certain chemicals which have the capability of preserving the food. Preservatives include sodium benzoate and sodium metabisulphite used in jams and squashes.

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