DBB2204 ENVIRONMENTAL SCIENCE FEB – MAR 2025

Description

SESSION	FEB-MAR, 2025
PROGRAM	BACHELOR OF BUSINESS ADMINISTRATION (BBA)
SEMESTER	IV
COURSE CODE & NAME	DBB2204 ENVIRONMENTAL SCIENCE

 

 

Assignment Set – 1

 

 

1. Briefly explain the Biogeochemical cycle. Discuss the Nitrogen cycle in detail and explain how human activities impact the Nitrogen cycle. 5+5

Ans 1.

Biogeochemical Cycle and the Nitrogen Cycle with Human Impact

Understanding the Biogeochemical Cycle

The biogeochemical cycle refers to the natural movement of elements and nutrients through different components of the Earth, including the biosphere (living things), lithosphere (land), atmosphere (air), and hydrosphere (water). These cycles are essential for maintaining the balance of life and ecosystems. Major biogeochemical cycles include the carbon cycle, nitrogen cycle, phosphorus cycle, and water cycle. Each cycle ensures that essential elements are continuously reused and recycled in forms accessible to plants, animals, and

 

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2. What are the two main components of an Ecosystem, explain with suitable examples. Also describe the food chain and its importance in maintaining the balance of the ecosystem.

Ans 2.

Components of an Ecosystem and the Role of Food Chain in Balance

Main Components of an Ecosystem with Examples

An ecosystem is a biological community of living organisms interacting with their physical environment. It includes both biotic (living) and abiotic (non-living) components. These two main components are essential for the structure and function of any ecosystem.

Biotic Components

The biotic components include all living organisms such as plants, animals, microorganisms, fungi, and humans. They are further classified into producers (autotrophs), consumers

 

 

3. Write a brief comparison between renewable and non-renewable natural resources.

Ans 3.

Comparison Between Renewable and Non-Renewable Natural Resources

Understanding Renewable Natural Resources

Renewable natural resources are those that can replenish naturally over a relatively short period of time through biological or ecological cycles. These resources are considered sustainable as long as their usage rate does not exceed the rate of regeneration. Examples include solar energy, wind energy, water (hydropower), biomass, and geothermal energy. Renewable resources are often favored for environmental sustainability as they produce little

 

 

Assignment Set – 2

 

 

4. What is Biodiversity and what are its different types. Briefly comment on Biodiversity hotspots, endangered vs endemic species. 4+6

Ans 4.

Biodiversity, Its Types, and Related Concepts

Definition of Biodiversity

Biodiversity, short for biological diversity, refers to the variety and variability of life forms found on Earth, including animals, plants, fungi, and microorganisms. It represents the richness of species in an ecosystem, the genetic differences among them, and the ecosystems they form. Biodiversity is critical for ecosystem stability, resilience, and the services it provides to humanity such as food, medicine, clean water, and climate regulation. It also

 

 

5. Among water, air and noise pollution, which do you consider the most severe? Justify your answer with reasons. 10

Ans 5.

The Most Severe Form of Pollution – A Case for Water Pollution

Introduction to Environmental Pollution

Environmental pollution refers to the contamination of natural resources such as air, water, and soil due to human activities. Among the various forms of pollution—air, water, and noise—each has severe impacts on ecosystems and human health. However, water pollution stands out as the most severe due to its widespread consequences on life forms, public health, and food security.

Impact of Water Pollution on Human Health

Water pollution has a direct and dangerous impact on human health. Contaminated water

 

 

6. Why do we need proper management of solid waste disposal? Support your answer with appropriate examples. 10

Ans 6.

Importance of Proper Solid Waste Management

Understanding Solid Waste Management

Solid waste refers to the unwanted or discarded material generated from households, industries, agriculture, and commercial establishments. It includes biodegradable waste like food, non-biodegradable items such as plastics and metals, and hazardous waste like batteries and chemicals. Solid waste management involves the systematic collection, transportation, treatment, and disposal of waste in a manner that minimizes environmental impact and