Blood and Tissue Nematodes of Human Beings. FILARIAL PARASITES OF HUMAN BEINGS.
Human beings and environment Unit5thfor 6th1
Transcript of Human beings and environment Unit5thfor 6th1
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HUMAN BEINGS HUMAN BEINGS AND ECOSYSTEMAND ECOSYSTEM
Human activity alters ecosystemsHuman activity alters ecosystems
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We overexploit natural We overexploit natural resources. For example, we resources. For example, we
catch too many fishcatch too many fish
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We occupy natural We occupy natural spaces with our towns spaces with our towns
and cities.and cities.
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We pollute the environment We pollute the environment with smoke and gas from with smoke and gas from
factories and carsfactories and cars
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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.