Question

environment on a
r
3) Why does the chest swell when we breathe
Ans. When we breathe in
hence the chest s.
4) Why is a scale given in maps?
​

Answer 1

Explanation:

Why is a scale given in maps?

ans- scale in maps are given as they show the relation between distance on map with distance on ground

Answer 2

Answer:

3rd answer : Pleurisy, also known as pleuritis,

is swelling of the thin lining around the chest cavity and lungs, also known as

the pleura. This lining creates a smooth surface so the lungs glide easily in the chest while breathing. When the lining swells, the lungs rub painfully against the chest, causing swelling and chest pain

4th answer : Scales are required to navigate maps correctly. It gives you an accurate understanding of distance. For example if the scale on a map states: 1:100000 or is 1:100000 scale map. Then that would mean that 1cm on the map would equal 1 km scale on the ground.May 14, 2020