This is guiding question of biology chapter ecosystem
earth is all we have in common we all are interdependent on each other for our survival
justify
PLEASE help me give me the proper answer nothing else please I need help urgently
Answers
Answer:
We need not feel powerless or overwhelmed by the scale of the
problems because there are many things we can do to make a difference.
You must have come across the five R’s to save the environment: Refuse,
Reduce, Reuse, Repurpose and Recycle. What do they refer to?
Refuse: This means to say No to things people offer you that you
don’t need. Refuse to buy products that can harm you and
the environment, say No to single-use plastic carry bags.
Reduce: This means that you use less. You save electricity by
switching off unnecessary lights and fans. You save water
by repairing leaky taps. Do not waste food. Can you think
of other things that you can reduce the usage of ?
Reuse: This is actually even better than recycling because the
process of recycling uses some energy. In the ‘reuse’
strategy, you simply use things again and again. Instead
of throwing away used envelopes, you can reverse it and
use it again. The plastic bottles in which you buy various
food-items like jam or pickle can be used for storing things
in the kitchen. What other items can we reuse?
Do You Know?
Activity 16.3
Pollution of the Ganga
The Ganga runs its course of over 2500 km from Gangotri in the Himalayas to Ganga
Sagar in the Bay of Bengal. It is being turned into a drain by more than a hundred
towns and cities in Uttar Pradesh, Bihar and West Bengal that pour their garbage
and excreta into it. Largely untreated sewage is dumped into the Ganges every
day. In addition, think of the pollution caused by other human activities like
bathing, washing of clothes and immersion of ashes or unburnt corpses. And then,
industries contribute chemical effluents to the Ganga’s pollution load and the
toxicity kills fish in large sections of the river. Namami Gange Programme is an
Integrated Conservation Mission approved as a Flagship Programme by the Union
Government in June, 2014. It was launched to accomplish the twin objectives of effective
abatement of pollution conservation and rejuvenation of River Ganga. The National
Mission for Clean Ganga is the implementation wing set up in October, 2016.
n Check the pH of the water supplied to your house using universal
indicator or litmus paper.
n Also check the pH of the water in the local waterbody (pond, river,
lake, stream).
n Can you say whether the water is polluted or not on the basis of
your observations?
As you can see, there are some measurable factors which are used
to quantify pollution or the quality of the water that we use for various
activities. Some of the pollutants are harmful even when present in very
small quantities and we require sophisticated equipment to measure
them. But as we learnt in Chapter 2, the pH of water is something that
can easily be checked using universal indicator.
2021–22
Sustainable Management of Natural Resources 269
16.1 WHY DO WE NEED TO MANAGE OUR RESOURCES?
Not just roads and buildings, but all the things we use or consume –
food, clothes, books, toys, furniture, tools and vehicles – are obtained
from resources on this earth. The only thing we get from outside is energy
which we receive from the Sun. Even this energy is processed by living
organisms and various physical and chemical processes on the earth
before we make use of it.
Why do we need to use our resources carefully? Because these are
not unlimited and with the human population increasing at a
tremendous rate due to improvement in health-care, the demand for all
resources is increasing at an exponential rate. The management of
natural resources requires a long-term perspective so that these will
last for the generations to come and will not merely be exploited to the
Repurpose: This means when a product can no more be used for the
original purpose, think carefully and use it for some other
useful purpose. For example, cracked crockery, or cups
with broken handles can be used to grow small plants
and as feeding vessels for birds.
Explanation:
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Explanation:
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