Test: Environment - 1

Natural environment comprises of land, water, air, plants and animals. Thus, natural environment refers to both biotic and abiotic conditions existing on the earth.

With the reckless use of the natural resources by human beings and the overgrowing pressure on limited resources left the following consequences occur like Destruction of mangroves and wetlands,
Depletion of ground water and Increased extinction rate of species.

Capacitors, switches (contacts), batteries, resistors contain silver andit  is released to environment in case of improper handling.

An ecosystem can be categorized into its abiotic constituents, including minerals, climate, soil, water, sunlight, and all other nonliving elements, and its biotic constituents, consisting of all its living members. Linking these constituents together are two major forces: the flow of energy through the ecosystem, and the cycling of nutrients within the ecosystem.

Biotic factors are the living parts of an environment, such as plants, animals and micro-organisms. Together, they are the biological factors that determine a species' success. Each of these factors impacts others, and a mix of both is necessary for an ecosystem to survive.

Lithosphere

It is the solid crust or the hard top layer of the earth.

It is made up of rocks and minerals and covered by a thin layer of soil.

Humans are the ones who are using the resources in an irregulated manner which is leading to their fast exhaustion.

So, the humans must learn how to use the environmental resources in a judicious and harmonious way.

The lithosphere is the upper part of the earth. It includes the crust and the solid portion of the mantle. Lithosphere interacts with atmosphere, hydrosphere, and biosphere and produces the pedosphere (the soil with its biotic and abiotic components). The lithosphere contains rocks, minerals, and soils.

-The lithosphere is the solid crust or the hard top layer of the earth.

-It is made up of rocks and minerals and covered by a thin layer of soil.

-It is an irregular surface with various landforms such as mountains, plateaus, plains, valleys, etc. Landforms are found over the continents and also on the ocean floors.

-Lithosphere is the domain that provides us forests, grassland for grazing, land for agriculture and human settlements. It is also a source of mineral wealth.

The world’s largest wetland is the Pantanal, which covers 200,000 square kilometres (during the wet season) through Brazil, Paraguay and Bolivia, although 80% of it is in Brazil. It is a land of flooded grasslands, savannas and tropical forests.