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Worksheetsgrade 5 , con 3 , leeson 3
Total questions: 10
Worksheet time: 5mins
Leakage of oil into seawater negatively affects the
desert organisms.
marine organisms.
forest organisms.
rivers organisms.
Fire in forest produces
smoke only.
ash only.
smoke and ash.
oxygen and ash.
Pollutants produced from a forest fire harm all the following, except
air.
respiratory system.
grasses.
sunlight.
As a result of pollution in an ecosystem, the number of living organisms
decreases.
increases.
doesn't change.
is doubled.
Any increase or decrease in the number of organisms of one type of species is known as
an ecosystem.
adaptation.
a climate change.
a population change.
If the climate changes suitable, the population of a species
will die.
will not be affected.
will decrease.
will increase.
Seabirds build their nests
on the water surface.
on the top of mountain cliffs.
deep down into the sea.
deep down into the river.
All the following statements are correct, except
small fish can eat seabirds.
sharks can eat small fish.
small fish cannot eat seabirds.
seabirds cannot eat sharks.
The suitable habitat for microorganisms to survive is
hot water.
warm water.
cold water.
boiled water.
Forest fire negatively affects the marine organisms.
TTrue
FFalse
