Give functions of the following
1. Blowholes
2. Metre scale
3. Torch
4. Electric cell
5. Switch
6. Magnetic compass
7. Water
8. Plants
Answers
the function of the following are :
1. Blowholes-It is homologous with the nostril of other mammals, and evolved via gradual movement of the nostrils to the top of the head. As whales reach the water surface to breathe, they forcefully expel air through the blowhole.
2. Metre scale-it is used to measure a distance between two points in space.
3. Torch -Torches have been used throughout history, and are still used in processions, symbolic and religious events, and in juggling entertainment.
4. Electric cell -An electrical cell is a device that is used to generate electricity, or one that is used to make chemical reactions possible by applying electricity.
5. Switch- switches are used for different functions such as to turn power on and off, adjust the power level or for safety measures.
6. Magnetic compass- 1.Magnetic compass is used for showing directions
2.It can be used to detect magnetic fields near you.
7. Water- water is use to clean clothes and use in homes.
8. Plant - plant are use to take oxygen and also plant give us food.
Hope this will help u!!! Thank you!!!
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Answer:
the breath through nostril called a blowholes