Question

C. Define the following:
1. Atmosphere
3. Desert
2. Plains
4. Ocean
D. Answer in brief.
1. What is the Earth made up of?
2. Why do many people live on plains?
3. What is a valley?
4. List two ways by which man has changed the Earth.​

Answer 1

Answer:

o my god

sorry

that such I can't answer

Answer 2

$\fbox\pink{A}\fbox\blue{n}\fbox\purple{s}\fbox\green{w}\fbox\red{e}\fbox\orange{r}$

1. An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. 

3. A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation.

2. In geography, a plain is a flat, sweeping landmass that generally does not change much in elevation. Plains occur as lowlands along valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands.

itne points me itna de diya ..... smjho kripa kar di tumhare upper.....!