Question

 I. Define the terms I. Nutrients ii. Balanced diet iii. Deficiency diseases iv. Obesity

.2. Answers the following. I. What are carbohydrates?

 ii. What are fats? Name some fat containing substances?

 iii. What are vitamins? Write various kinds of vitamins?

 Chapter-3. I Define the terms’ Soil erosion ii. soil conservation. Afforataion.iv. Terrace farming.

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Answer 1

Answer:

1) 1.The chemical substance present in food which provide energy and materials needed by the body. 2. A diet containing all the nutrients in adequate quantities. 3.Diseases which occur due to the deficiency of one or more essential nutrients in a diet. 4.A disorder involving excessive body fat that increases the risk of health problem.

Q. 2) I. Carbohydrates are energy giving compounds. ii. Fats are energy giving compounds. Fat containing substance are milk products, meat, butter, etc. iii. Vitamins are several substances that are found in certain types of food and that are important for growth and good Health. Various kinds of vitamin are vitamin A, vitaminB, vitaminC, VitaminE and Vitamin K.

Chapter 3 Definition I. Detachment and movement of topsoil or soil material from the upper part of the profile by the action of wind or running water especially as a result of changes brought about by human activity ii. Soil conservation is the prevention of loss of the top most layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination. iii. planting trees on an area of land in order to form a forest. iv. Terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope.

Explanation:

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Answer 2

Given:-

Initial velocity ,u = 0m/s

Distance covered ,s = 15m

Time taken ,t = 3 s

To Find:-

Distance covered by it in 12 second.

Solution:-

It is given that the body starts from rest and moving with a constant acceleration . We have to calculate the