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KEEP THE ENVIRONMENT CLEAN

Keeping the environment clean is essential for the well-being of both
humans and the planet. A clean environment reduces harmful pollutants
and toxins that can cause diseases and health problems. It also helps
maintain biodiversity, preserves natural resources, and ensures cleaner air

and water, which are crucial for life. Additionally, a clean and healthy
Science environment supports mental well-being by providing green spaces and a
Bytes
serene atmosphere. Science shows that environmental cleanliness
Testimony promotes sustainability and a better quality of life for current and future
• Every year the world
uses up to 5 trillion generations, making it our responsibility to keep the environment clean for
plas c bags. a healthier world.
• Plas c makes up 10%
of all of the waste we
generate.
• 78% of marine
mammals are at risk of
accidental death due
to plas c pollu on.

a. b.
Two different playgrounds
HOW DO WE KNOW THAT WE ARE UNWELL?
Our body has its own natural way of working to keep us healthy, but when
something goes wrong, we may start feeling unwell. At such times, we

notice symptoms, like pain, tiredness, or dizziness, which are things we
personally feel. We may also show signs, such as fever, swelling, rash, or
high blood pressure, which can be seen or measured by others. Symptoms

and signs are important because they give doctors clues about what is
happening inside the body and help them find out the reason for our
illness.

DISEASES: WHAT ARE THE CAUSES AND TYPES?

A disease is a condition that stops the body or mind from working in a
normal way. It can happen when one or more organs or body systems do

not function properly. Some diseases are caused by germs such as bacteria,
viruses, fungi, worms, or protozoa and these germs are called pathogens.
Other diseases can develop because of poor nutrition, lack of exercise, or
unhealthy lifestyle habits. While some diseases last only for a short time

and get cured quickly, others can continue for a long time and may require
regular treatment and care.

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