This document contains notes from a presentation on environmental science. It defines environmental science as the study of how humans interact with the environment. It describes the key components of the environment - lithosphere, hydrosphere, atmosphere, and biosphere. It discusses ecosystems as communities where organisms interact with biotic (living) and abiotic (non-living) components. Examples of ecosystems mentioned include deserts, rainforests, oceans, and arctic tundra. Food chains and food webs are also briefly explained as representations of what eats what in an ecosystem. The presentation was designed and presented by Akshat Jain.

1. • NAME – AKSHAT JAIN
• ID- EDC-2020-047
• COURSE- BBA
DESIGNED AND PRESENTED BY AKSHAT JAIN

2. WHAT IS ENVIRONMENTAL
SCIENCE ?
 IT IS THE STUDY OF
HOW HUMANS
INTERACT WITH THE
ENVIRONMENT.

3. WHAT’S ENVIRONMENT ?
OUR SURROUNDING.
THE CONDITIONS WHICH
INFLUENCES THE
DEVELPMOENT OF LIFE OF
THE ORGANISM
EVERY ORGANISM HAS
THEIR OWN ENVIRONMENT.
FOR US THE ENVIRONMENT
CONSISTS OF
AIR,WATER,LAND

4. DIMENSIONS OF EARTH’S
ENVIRONMENT
LITHOSPHERE;
HYDROSPHERE;
THE LITHOSPHERE IS THE SOLID,ROCKY
CRUST COVERING ENTIRE PLANET
WHICH INCLUDES
ROCKS,MINERALS,SOIL ETC.
THE HYDROSPHERE IS COMPOSED
OF THE WATER ON OR ABOVE THE
EARTH’S SURFACE WHICH INCLUDES
OCEANS,RIVERS ETC.

5. ATMOSPHERE;
BIOSPHERE;
THE ATMOSPHERE IS THE BODY
OF AIR THAT SURROUNDS OUR
EARTH WHICH INCLUDES ALL
THE GASES AND OTHER
DIFFERENT LEVEL OF SUB-
SPHERES.
THE BIOSPHERE IS THE LIFE
SUPPORTING ARENA OF
THE EARTH WHICH
INCLUDES
HUMANS,PLANTS,ANIMALS.

6. GOALS OF EVS
 IMPORTANCE OF EVS
 TO IMPROVE THE QUALITY OF ENVIRONMENT
 TO CREATE AN AWARENESS AMONG THE PEOPLE ON
ENVIRONMENTAL PROBLEMS AND CONSERVATIONS
 TO CREATE AN ATMOSPHERE SO THAT PEOPLE
PARTICIPATE IN DECISION MAKING AND DEVELOP THE
CAPABILITIES TO EVALUATE DEVELOPMENTAL
PROGRAMS
 NEED FOR AN ALTERNATIVE SOLUTION
 NEED TO SAVE HUMANITY FROM EXTINCTION
 NEED FOR WISE PLANNING OF DEVELOPMENT

7. WHAT IS ECOSYSTEM?
• AN ECOSYTEM IS A
COMMUNITY WHERE
ALL ORGANISMS
INTERACT TOGETHER
WITH THEIR
ENVIRONMENT,WHIC
H HAS TWO
COMPONENTS BIOTIC
AND ABIOTIC.

8. COMPONENTS OF
ECOSYSTEM.
 BIOTIC
 The biotic components are the
organic compounds and also
known as living component of an
ecosystem. There are subdivided
into the following groups:
 Producers
 Consumers
 Decomposers
 ABIOTIC
 Abiotic components are the non-
organic compounds and also
known as non-living components
of an ecosystem like
 Air,
 Water,
 Soil

9. EXAMPLES OF ECOSYSTEM
 DESERT  RAINFOREST
 OCEAN  ARCTIC TUNDRA

10. FOODCHAIN/FOODWEB
THESE BOTH REPRESENTS
WHAT EATS WHAT IN AN
ECOSYSTEM
FOOD CHAIN
FOOD WEB

11. DESIGNED AND PRESENTED BY AKSHAT JAIN