Questions

The Tropic of Cancer is 23.5 degrees north latitude. It passes through 16 countries across 3 continents. They are

1. In North America,

Mexico and Bahamas(Archipelago).

2. In Africa,

Niger, Algeria, Mauritania, Egypt, Libya, Mali and Western Sahara.

3. In Asia,

Myanmar, Omen, Bangladesh, India, Saudi Arabia, China, United Arab Emirates and Taiwan.

The Tropic of Cancer also passes through 6 Water Bodies on the whole. They are

1. Indian Ocean,

2. Atlantic Ocean,

3. Pacific Ocean,

4. Taiwan Strait,

5. Red Sea (and) 

6. Gulf of Mexico.

Hence, The Tropic of cancer does not pass through Pakistan.

Hearts are of several types. In some invertebrates the heart is simulated by the nervous system to do its work. Such hearts are called Neurogenic hearts. The Human heart is myogenic. i.e, it recieves the stimuli for contraction from the muscular node called sinu-auricular node or pace maker.

National Institute of Rural Development is situated in Hyderabad. It is an organization involved in rural research and training in rural development.