1. Answer the following questions.
(1) What is an ecosystem?
(ii) What do you mean by natural environment?
(iii) Which are the major components of the environment?
(iv) Give four examples of human made environment.
(v) What is lithosphere?
(vi) Which are the two major components of biotic environment?
(vii) What is biosphere?
Answers
(a) Desert
(b) Aquarium
(c) Forest
(ii) Which is not a component of human environment?
(a) Land
(b) Religion
(c) Community
(iii) Which is a human-made environment?
(a) Mountain
(b) Sea
(c) Road
(iv) Which is a threat to environment?
(a) Growing plant
(b) Growing population
(c) Growing crops
Answer:
1) Ecosystem
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.
2) Natural Environment
The term 'natural environment' refers to the non-human-made surroundings and conditions in which all living and non-living things exist on Earth. ... Ecological units that operate as natural systems (such as soil, vegetation and so on). Universal natural resources (such as air and water).
3) Major components of the environment
The basic components of the environment are atmosphere or the air, lithosphere or the rocks and soil, hydrosphere or the water, and the living component of the environment or the biosphere.
4) Examples of human made environment:
Bridge, roads, buildings, and monuments are four examples of human made environment.
5) Lithosphere
A lithosphere is the rigid, outermost shell of a terrestrial-type planet or natural satellite. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater.
6) The two major components of biotic environment.
Two major components of biotic environment are Plants and Animals.
7) Biosphere
The biosphere is made up of the parts of Earth where life exists—all ecosystems. The biosphere extends from the deepest root systems of trees, to the dark environments of ocean trenches, to lush rain forests, high mountaintops, and transition zones like this one, where ocean and terrestrial ecosystems meet.