human beings and environment unit5thfor 6th1
TRANSCRIPT
HUMAN BEINGS HUMAN BEINGS AND ECOSYSTEMAND ECOSYSTEM
Human activity alters ecosystemsHuman activity alters ecosystems
We overexploit natural We overexploit natural resources. For example, we resources. For example, we
catch too many fishcatch too many fish
We occupy natural We occupy natural spaces with our towns spaces with our towns
and cities.and cities.
We pollute the environment We pollute the environment with smoke and gas from with smoke and gas from
factories and carsfactories and cars
Words to studyWords to study
Overexploit….exploit excessively.
Natural resources: naturally occurring materials such as coal, fertile land, etc, that can be used by man
Environment:Ecology . the air, water, minerals, organisms, and all other external factors surrounding and affecting a given organism at any time.
Pollution: the introduction of harmful substances or products into the environment: air pollution.