Endangered Ecosystem Flashcards
Excess logging was carried out in a tropical forest.
What is the effect of this activity on the environment?
> Soil erosion
What is the effect of thermal pollution?
> Rapid growth of algae
▪️Biochemical oxygen demand(BOD) increases
▪️Algal bloom
▪️Light intensity is reduced
What is the phenomenon?
> Eutrophication
(Water resources are rich in dissolved nutrients that stimulate the growth of algae, resulting in the decreasing of dissolved oxygen)
Which way can reduce pollution?
> Use energy saving bulbs
What is the substance that causes the depletion of ozone layer?
> Chlorine
What is the main gas that causes greenhouse effect?
> Carbon dioxide
▪️Melting of ice at the poles
▪️Increase in sea level
What is the environmental phenomenon?
> Global warming
Which activity does not reduce sediment?
> Spray the aquatic plant with herbicides
