The environment is the natural surroundings that include both non-living things and living things. The word environment derives from the word Environ. Environ is a French word that means surrounding.
Ecosystem
An ecosystem refers to the living and nonliving things that live in the environment.
There are two types of ecosystems.
- Natural ecosystems
- Artificial ecosystems
Natural ecosystems
Natural ecosystems refer to the things that are already present by nature. Some examples are lakes, mountains, and deserts.
Artificial ecosystems
Artificial ecosystems refer to the environment that human beings make. Some examples are aquariums, gardens, zoos.
Components of the environment
The environment consists of two main components
- Biotic environment
- Non-biotic environment
Biotic environment
The biotic environment is an environment that consists of all living organisms like animals, birds, mammals, bacteria, insects, and many more.
Abiotic environment
The abiotic environment consists of non-living things such as air, water, mountains, sand, and many more.
The vitality of the environment
All living things depend on the environment for food, water, and shelter. It helps in maintaining a healthy flow of life. Therefore, it is very important to protect the environment.
Human activities and the environment
With the increase in technology and developments, humans started activities that affect the environment intensively. The activities are deforestation, acidification of oceans and seas, global warming, pollution, overpopulation, etc.
Our Environment (Water, Air Around us, Garbage in Garbage out) Sample Questions for Class 6
Question 1
Farmers always plough or turn the soil before they plant seeds because
A. It loosens the soil and allows air to enter into the spaces between the soil particles
B. Sprouting seeds will be able to use the trapped air
C. Plants will absorb some air through their roots and also take in water and minerals from the soil
D. All of these
Question 2
We can recycle water by………….
A. Reusing the water from washing clothes to cook
B. Discharging factory waster into canals and seas
C. Discharging sewage and waste materials into the ocean
D. Reusing the water from washing clothes to wash the floor
Question 3
The boiling point of water is 100 degree c. But a sample when boiled, boils at 130 degree c. This implies that
A. It was cold
B. The intensity of flame is not enough
C. It has some impurities in it
D. None of these
Question 4
Hardness of water is due to the presence of
A. Chlorides and sulphates of calcium and potassium
B. Bicarbonates, chlorides and sulphates of calcium and magnesium
C. Bicarbonates, and chlorides of potassium and magnesium
D. Cicarbonates, chlorides and sulphates of calcium, potassium and magnesium
Question 5
Air and Water Worksheet-1
Air and Water Worksheet-1
The water from taps which we drink is sweet while distilled water is bitter and we cannot drink it. This is due to
A. Addition of sugar to tap water
B. Dissolved gases and salts in tap water
C. Chemical treatment
D. Both Addition of sugar to tap water & Chemical treatment