Read the following passage carefully and answer the questions that follow:

 Sharks have prowled the seas for about 400 million years. Their size, power and great toothy jaws fill us with fear and fascination. A few kinds of sharks such as great white sharks attack the swimmers but most of them stay away from people. Most of the sharks eat other sharks. Sharks are fish but they don’t have bones. They are made up of rubbery

bone material called cartilage. Sharks use their eyes, ears and sense of smell to hunt food.

Questions:

(i) For how many years sharks have prowled the seas?

 (ii) What do most sharks eat?

( iii) What is a shark skeleton made up of?

(iv) How do sharks hunt food?

OR

Read the following passage carefully and answer the questions that follow:

 Vitamins and minerals are natural substances found in a wide range of food and are essential to maintain a healthy body. Vitamin-A keeps eyes and skin healthy and helps to protect against infections. Vitamin-A is found in milk, eggs and vegetables. Vitamin-B is good for nervous system and is found in green vegetables. Vitamin-C helps the immune system by fighting against infections. Vitamin-C is found in citrus fruits like strawberries, kiwi, guava and tomatoes.

 Questions:

(i) Where are vitamins and minerals found?

(ii) What are the sources of Vitamin A?

(iii) What is Vitamin B good for?

(iv) What does Vitamin C help in and what are