Question

what is lithosphere,hydrosphere,Biosphere​

Answer 1

The Lithosphere--contains all of the cold, hard solid land of the

planet's crust (surface), the semi-solid land underneath the

crust, and the liquid land near the center of the planet. The

surface of the lithosphere is very uneven. There are high

mountain ranges like the Rockies and Andes, huge plains or flat

areas like those in Texas, Iowa, and Brazil and deep valleys along

the ocean floor.

The solid, semi-solid, and liquid land of the lithosphere form layers that are

physically and chemically different. If someone were to cut through Earth to

its center, these layers would be revealed like the layers of an onion. The

outermost layer of the lithosphere consists of loose soil rich in nutrients,

oxygen, and silicon. Beneath that layer lies a very thin, solid crust of oxygen

and silicon. Next is a thick, semi-solid mantle of oxygen, silicon, iron, and

magnesium. Below that is a liquid outer core of nickel and iron. At the center

of Earth is a solid inner core of nickel and iron.

The Hydrosphere -- contains all the solid, liquid, and gaseous

water of the planet. It ranges from 10 to 20 kilometers in

thickness. The hydrosphere extends from Earth's surface

downward several kilometers into the lithosphere and upward

about 12 kilometers into the atmosphere. A small portion of

the water in the hydrosphere is fresh (non-salty). This water

flows as precipitation from the atmosphere down to Earth's surface, as

rivers and streams along Earth's surface, and as groundwater beneath

Earth's surface. Most of Earth's fresh water, however, is frozen.

Ninety-seven percent of Earth's water is salty. The salty water collects in

deep valleys along Earth's surface. These large collections of salty water are

referred to as oceans. The image above depicts the different temperatures

one would find on oceans' surfaces. Water near the poles is very cold while

water near the equator is very warm. The differences in temperature cause

water to change physical states. Extremely low temperatures like those

found at the poles cause water to freeze into a solid such as a polar icecap, a

glacier, or an iceberg. Extremely high temperatures like those found at the

equator cause water to evaporate into a gas.

The Biosphere --contains all the planet's living things. This

sphere includes all of the microorganisms, plants, and animals

of Earth. Within the biosphere, living things form ecological

communities based on the physical surroundings of an area.

These communities are referred to as biomes. Deserts,

grasslands, and tropical rainforests are three of the many

types of biomes that exist within the biosphere.

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Answer 2

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