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Science CBSE Homework Assignments
Class 8
Conservation of plants and animals
Reforestation
1.
Recycle of paper
Task:
6
m.
Choose the correct option
:
1
.
Deforestation poses a serious threat due to
loss of biodiversity
loss of habitat
all of the above
loss of balance in ecosystem
2
.
Killing of snakes cause the increase in rats that had damaged the crops of the farmer. This is due to
decreased number of snakes as predators
increase in number of prey
all of the above
loss of ecological balance
3
.
An extinct flightless bird that was hunted in Mauritius and thus became extinct is
dodo
great auk
none of the above
passenger pigeon
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