Question

Give reasons.
(i) We cannot go to the centre of the earth.
(ii) Sedimentary rocks are formed from sediments.
(iii) Limestone is changed into marble

NCERT Class 7th Social Science (Our Environment) Chapter 2 Inside our Earth

Answer 1

I) It is not possible to travel to the centre of the Earth because of high temperature and pressure. It is not possible to survive in such unfavourable conditions, and there is no oxygen to breathe in.

II) Sedimentary rocks are formed after hardening of particles of sediments that are carried by wind and water due to high compression and pressure.

III) Limestone is a sedimentary rock and it converts to marble due to extreme heat and pressure.

Answer 2

Explanation:

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