Question

how are Plains formed​

Answer 1

Explanation:

Generally, rivers flowing down the mountains carry the eroded materials from the mountain. These rivers deposit the eroded materials on the valley of these mountains. It is from these deposits that plains are formed.

There are 3 major types of plain landforms, based on their formation.

1 Structural plains

: Formed due to uplift and subsidence of land due to endogenic forces. Formed from horizontally bedded rocks relatively undisturbed by the crust movements of the earth.

2 Erosional plains:

Leveled by various agents of denudation such as running water, rivers, wind and glacier which wear out the rugged surface and smoothens them.

3 Depositional Plains

: Formed by the deposition of materials brought by various agents of transportation such as rivers, wind, waves, and glaciers. Their fertility and economic relevance depend greatly on the types of sediments that are laid down.

hope it helps u

Answer 2

Answer :-

ᴘʟᴀɪɴs ᴀʀᴇ ɢᴇɴᴇʀᴀʟʟʏ ғᴏʀᴍᴇᴅ ʙʏ ʀɪᴠᴇʀs ᴀɴᴅ ᴛʜᴇɪʀ ᴛʀɪʙᴜᴛᴀʀɪᴇs. ᴛʜᴇ ʀɪᴠᴇʀs ғʟᴏᴡ ᴅᴏᴡɴ ᴛʜᴇ sʟᴏᴘᴇs ᴏғ ᴍᴏᴜɴᴛᴀɪɴs ᴀɴᴅ ᴇʀᴏᴅᴇ ᴛʜᴇᴍ. ᴛʜᴇʏ ᴄᴀʀʀʏ ғᴏʀᴡᴀʀᴅ ᴛʜᴇ ᴇʀᴏᴅᴇᴅ ᴍᴀᴛᴇʀɪᴀʟ. ᴛʜᴇɴ ᴛʜᴇʏ ᴅᴇᴘᴏsɪᴛ ᴛʜᴇɪʀ ʟᴏᴀᴅ ᴄᴏɴsɪsᴛɪɴɢ ᴏғ sᴛᴏɴᴇs, sᴀɴᴅ ᴀɴᴅ sɪʟᴛ ᴀʟᴏɴɢ ᴛʜᴇɪʀ ᴄᴏᴜʀsᴇs ᴀɴᴅ ɪɴ ᴛʜᴇɪʀ ᴠᴀʟʟᴇʏs. ɪᴛ ɪs ғʀᴏᴍ ᴛʜᴇsᴇ ᴅᴇᴘᴏsɪᴛs ᴛʜᴀᴛ ᴘʟᴀɪɴs ᴀʀᴇ ғᴏʀᴍᴇᴅ.