A. Answer the following questions briefly :
1. Define environment.
2. Mention any two components of environment.
3. Humans are abiotic components of the environment. Is the statement true or false. Give reason.
4. The earth is surrounded by an envelope of air. Identify the term.
5. Define biosphere.
6. What is biodiversity ?
7. Define pollution.
8. Why do we need to handle waste carefully ?
9. Define deforestation.
10. Define sustainable development.
Answer the following questions in detail
Answers
- Environment means anything that surround us. It can be living (biotic) or non-living (abiotic) things.
- The basic components of the environment are atmosphere or the air, lithosphere or the rocks and soil, hydrosphere or the water, and the living component of the environment or the biosphere.( write any two from this)
3.False, humans are biotic components
4. The earth is surrounded by an envelope of air called the atmosphere.
5. The biosphere is a narrow zone of the earth where land, water, air
interact with each other to support life. It is in this zone that life exists
6. The term biodiversity (from “biological diversity”) refers to the variety
of
life on Earth at all its levels, from genes to ecosystems, and can
encompass the evolutionary, ecological, and cultural processes that
sustain life.
7. Pollution is the introduction of harmful materials into the
environment.
These harmful materials are called pollutants. Pollutants can be
natural,
such as volcanic ash.
8. We need to handle waste carefully because wastes can be
hazardous and can contaminate the environment if not handled
properly.
9. Deforestation, the clearing or thinning of forests by humans.
10. Sustainable development is defined as an approach to developing
or growing by using resources in a way that allows for them to
renew or continue to exist for others. Using recycled materials or
renewable resources when building is an example of sustainable
development.
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