Observe a lawn in your area (if you have one) and see how it is
maintained. Find out from the gardener the different types of plants
that he removes from time to time.
Do you think a farmer does the same thing on his farm?
Activity-2
Find out how many types of insects are present in and around your
house. Do you find the same type of insects in all seasons? Make a chart
of insect types(in case you don’t know their names or take the help of
your elders) and note their occurrence for at least a week in each season.
Repeat for other seasons.Study for a year and find out when you have highest
varieties of them. Study them for subsequent years to see any of them
have disappeared.
Some governments have established parks and sanctuary to protect
wildlife and their habitats. They are also working to abolish hunting and
fishing practices that may cause the extinction of some species.
Fossil Fuels
Fossil fuels were produced
from the remains of ancient plants
and animals. They include coal,
petroleum (oil), and natural gas.
What do fossil fuels provide us?
Why do we need to conserve
them?
Apart from its use in vehicles,
many of the products we use today
are made from petroleum. These
include plastics, synthetic rubber,
fabrics like nylon, medicines,
cosmetics, waxes, cleaning
products, medical devices etc.
fig-8: Percentage consumption of
some resources in India
We need to conserve fossil fuels so we don’t run out of them. However,
there are other good reasons the pollution caused by them when burnt, to
limit our fossil fuel use.
Scientists are exploring alternatives to fossil fuels. They are trying to
produce renewable biofuels to power cars and trucks. They have
successfully produced electricity using the sun, wind, water etc.
from the remains of ancient plants
and animals. They include coal,
petroleum (oil), and natural gas.