Q 1. Define natural environment. What are its domains?
Ans: Natural Environment: All the objects created by nature constitute physical or natural environment. It refers to both biotic and abiotic conditions existing on the earth. Land, water, air, plants and animals form the natural environment. Lithosphere, hydrosphere, atmosphere and biosphere are the domains of natural environment.
Q 2. Why is the environment changing?
Ans: Environment is changing because of our needs. They are increasing day by day; we are therefore modifying and at times even destroying our natural surroundings.
Q3: Why is the hydrosphere essential for all living organisms?
Ans: The hydrosphere is essential for all living organisms because it comprises various sources of water and different types of water bodies like rivers, lakes, seas, and oceans. Water is a vital component for the survival and functioning of living organisms. It is necessary for processes such as hydration, transportation of nutrients, regulation of body temperature, and the maintenance of overall bodily functions.
Q4: How does the atmosphere protect us?
Ans: The atmosphere, a thin layer of air surrounding the Earth, protects us from harmful rays and the scorching heat of the sun.
Q5: How do plants and animals depend on each other?
Ans: Plants and animals depend on each other for various aspects, such as food, shelter, pollination, and oxygen-carbon dioxide exchange.
Q6: How have humans modified their environment over time?
Ans: Humans have modified their environment through activities such as agriculture, domestication of animals, the invention of tools and technology, and industrialization.
Q7: When is World Environment Day celebrated?
Ans: World Environment Day is celebrated on June 5th every year.
Q8: How can individuals contribute to protecting the environment?
Ans: Individuals can contribute to protecting the environment by conserving energy, reducing water usage, recycling, planting trees, using public transportation, and supporting eco-friendly products and practices.
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1. What is the importance of the environment for living organisms? |
2. How do human activities impact the environment? |
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5. Why is biodiversity important for the environment? |
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