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St. It is the harms that happen to air, water and soil due to human activities.
Pollution
. Throwing plastic garbage and waste materials into a river cause..........
Water pollution
The consumers that exist at the top of any food chain are called...........
Too predators /final consumer /apex predator
Heavy rain causes.......... which destroys desert ecosystems. .
Floods
St. 2. A human activity that leads to decreasing the number of fish and affecting many marine food webs.
Overfishing
2. If producers increase in an ecosystem, the number of primary consumers will.........
Increase
What hapoens if. The climate change is unsuitable for a population of one type of species.
The population of this specieswill decrease
Give reasons. In case of fire forest, animals suffer from difficulty breathing.
Because fire forests produce smoke that causes difficulty breathing of animals.
Give reasons. Food webs can be destroyed due to pollution.
Because pollution negativelyaffects all living organisms infood webs.
Small fish feed on...........that float on the surface of the sea.
Microorganisms
. If the climate change is suitable, the population of a species will.........
Increase
St. They are organisms that are too small for people to see with only their eyes.
Microorganisms
St. Flying living organisms that build their nests on the top of mountain cliffs and dive deeply into the sea to eat
Sea birds
St: . It is the number of organisms of one type of species live in an area. •
Population
T or F Seabirds eat small fish that swim near the water surface.
True
T/f Microorganisms are producers that small fish feed on to get energy.
True
T/f If the climate change is unsuitable, the population of a species decreases
False
T/f : Death of an animal due to pollution affects all other levels of the food web
True


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