Question

II. Define the following:
1. Crust
2. Mantle
3. Core
4. Biosphere
5. Asthenosphere​

Answer 1

Crust

In geology, the crust is the outermost solid shell of a rocky planet, dwarf planet, or natural satellite. It is usually distinguished from the underlying mantle by its chemical makeup; however, in the case of icy satellites, it may be distinguished based on its phase.

Mantle

A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density.

$<b><marquee>$Mark me as brainliest please

Answer 2

Crust = a hard layer on the outside of something
.
.
Mantle = the part of the earth between the surface Crust and the centre Core
.
.
Core = the central or the most important part of something
.
.
Biosphere = the part of the Earth's surface and the atmosphere in which plants and animals can live
.
.
Asthenosphere = the upper layer of the earth's Mantle