NEW
Font size
WorksheetsEcology Cycles Webquest
Total questions: 17
Worksheet time: 9mins
Why is carbon significant?
Because it is a greenhouse gas.
Because all living things are made of carbon.
Because it is the most abundant element on Earth.
Because it can only be found in the atmosphere.
How do plants use carbon dioxide?
They release it during cellular respiration.
They use it to create oxygen.
They use carbon dioxide and sunlight to make food through photosynthesis.
They absorb it to strengthen their stems.
What has been the effect of burning fossil fuels on the atmosphere?
It has decreased the amount of carbon dioxide in the atmosphere.
It has had no significant effect on the atmosphere.
It has led to an increase in greenhouse gases which has made the earth warmer overall.
It has increased the oxygen levels in the atmosphere.
How do plants and animals contribute to the water cycle?
They absorb water from the atmosphere.
They release water into the atmosphere when they breathe.
They convert water into carbon dioxide.
They store water in their tissues without releasing it.
What is transpiration in the context of the water cycle?
The process of water moving through the food chain.
The evaporation of water from the surface of the ocean.
The evaporation of water from plants through the stomata.
The infiltration of water into the soil.
Where can nitrogen be found?
Only in the atmosphere as nitrogen gas.
In protein, DNA and RNA, and chlorophyll.
Solely within the bodies of animals.
Exclusively in the soil.
What role do nitrogen-fixing bacteria play in the nitrogen cycle?
They convert nitrogen gas into noble gases.
They release nitrogen gas back into the atmosphere.
They convert nitrogen gas into organic compounds that living organisms can take up.
They consume nitrogen from the soil, depleting it.
What role do decomposers play in the nitrogen cycle?
They convert nitrates into nitrogen gas.
They convert the ammonia in dead animals into ammonium.
They produce ammonia from atmospheric nitrogen.
They absorb nitrogen gas directly from the atmosphere.
Why is phosphorus a concern in surface waters?
It decreases the oxygen level in the water.
It is not essential for plant growth.
Excess phosphorus leads to eutrophication/dead zones.
It helps in the purification of water.
How does phosphorus reach surface waters?
Through evaporation and condensation.
Through absorption by aquatic plants.
Through rain and runoff.
Through the consumption by fish and wildlife.
How does dissolved oxygen (oxygen in water) affect living organisms in the river?
High dissolved oxygen levels are toxic to fish and aquatic insects.
Dissolved oxygen is irrelevant to the survival of fish and aquatic insects.
Low dissolved oxygen makes it difficult for fish and aquatic insects to survive.
Dissolved oxygen levels have no impact on the river's ecosystem.
How effective has monitoring and regulating nitrate runoff been at addressing the problem of low species diversity and abundance?
It has made the situation worse.
It has had no significant impact.
It has decreased diversity and abundance further.
It has effectively restored the diversity and abundance to how it was in 1950.
How effective has reducing toxins, like DDT, been at addressing the problem of low species diversity and abundance?
It has had a minimal effect.
It has increased diversity and abundance.
It has led to a decrease in species diversity.
It has not been implemented yet.
What impact does urban development have on local ecosystems?
It increases biodiversity by introducing new species.
It has no significant impact on local ecosystems.
It leads to habitat destruction and decreased biodiversity.
It enhances water quality in nearby rivers and lakes.
Why is it important to monitor air quality in urban areas?
To regulate temperature and climate within the city.
To ensure public health by reducing pollution-related diseases.
To increase the efficiency of urban transportation systems.
To enhance the aesthetic appeal of the city.
How does reforestation contribute to the carbon cycle?
By releasing more carbon dioxide into the atmosphere.
By decreasing the amount of oxygen produced during photosynthesis.
By increasing soil erosion and thus carbon release from the soil.
By absorbing carbon dioxide from the atmosphere and releasing oxygen
Why is biodiversity important for ecosystem stability?
It ensures that ecosystems are less productive.
It makes ecosystems more susceptible to diseases.
It contributes to the resilience of ecosystems, allowing them to recover from disturbances.
It has no impact on ecosystem stability.
