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- 1. Multiple Choice
Which is a biotic factor that could affect an ecosystem?
dust storms moving through an ecosystem
bacteria harming the health of organisms in an ecosystem
large amounts of acid rain precipitation seeping into the soil in an ecosystem
high levels of carbon dioxide entering the atmosphere within an ecosystem
- 2. Multiple Choice
The three global biomes in the table are home to different species of fox and members of the deer family.
Biome Temperature Range Precipitation (cm per year)Typical Plants Fox and Deer Temperate deciduous forest –30 to 30°C(–22 to 86°F) 75 to 150 oaks, maples, small flowering plants gray fox, white-tailed deer Boreal (coniferous) forest –40 to 20°C(–40 to 68°F) 30 to 90 fir, pine, sprucered fox, moose Tundra –40 to 18°C (–40° to 64°F) 15 to 25 low-growing plantsarctic fox, caribou (reindeer)
Of the three biomes, why would you expect tundra to have the fewest number of animals in each population?
Shortest plants
tallest plants
least amount of food
most rain
- 3. Multiple Choice
One biome includes bearberry, a short plant with small, waxy leaves, shallow roots, and flowers that bloom quickly in the short growing season. Another biome includes tall grasses that can survive fires due to roots that extend 6 to 7 meters deep during the long growing season. What is most likely true about the two biomes?
They have the same temperature range but different rainfall ranges.
They have the same temperature range and the same rainfall range.
They are at different latitudes but have the same temperature range.
They are at different latitudes and have different temperature ranges.
- 4. Multiple Choice
The table lists some ways that plants have adapted to survive in a desert biome.
Desert Plant Adaptations 1 Flowers open at night for pollination by bats. 2 Spines protect plants from consumers. 3 Needles lose less water than broad leaves in high temperatures. 4 Wide root structures help plants soak up water in rare rainstorms.
Which statements describe adaptations to biotic factors in a plant’s desert biome?
1 and 2
1 and 3
2 and 3
2 and 4
- 5. Multiple Choice
Which biome has the most vegetation?
desert
forest
grassland
tundra
- 6. Multiple Choice
Why is it important to conserve the biodiversity of Earth?
to decrease the amount of global predator populations
to decrease the stability of major global ocean currents
to increase the stability of ecosystems during environmental changes
to increase the amount of nonrenewable resources located in the lithosphere
- 7. Multiple Choice
Why is it difficult to create a terrarium ecosystem that will last a long time without human help?
Terrarium ecosystems cannot get enough sunlight.
Terrarium ecosystems cannot get enough oxygen.
Ecosystems with few species are weak and unstable.
All ecosystems require thoughtful human management.
- 8. Multiple Choice
The Waccamaw Drainage System is a system of interrelated coastal wetlands in southeastern North Carolina. Land-use modification and human population growth threaten these wetlands in a variety of ways. Scientific experts have recommended a number of management practices to protect the Waccamaw Drainage System. Which one of these recommendations would reduce stream bank erosion?
encourage no-till agriculture near waterways
remove downed trees from river channels
dredge certain segments of the river
plant shoreline buffer zones
- 9. Multiple Choice
How could the introduction of a nonnative species of plant affect an ecosystem in North Carolina?
It could pollinate the native plant species, producing a disease-resistant species.
It could reduce the competition for space and light with native plant species.
It could take over the habitats of the native plant species.
It could cause some insect species to destroy native plant species.
- 10. Multiple Choice
Coal ash is a byproduct produced when coal is burned for energy. Coal ash contains sand, unburned carbon, and a variety of metals, such as arsenic, cadmium, lead, mercury, and zinc. Some energy companies mix coal ash with water and store this waste in ponds. How could the accidental release of coal ash waste impact ecosystems?
Heavy metals could bioaccumulate in aquatic food chains.
Unburned carbon could enter waterways and provide food for organisms.
Coal ash particles that mix with rain could acidify lakes and rivers.
Leaking waste could increase blooms of toxic algae.
- 11. Multiple Choice
Research in which of these areas has the greatest impact on the environment?
irradiating food
organic fertilizers
bacteria to clean up oil spills
developing larger sweeter strawberries
- 12. Multiple Choice
How can water be an agent for physical weathering?
by absorbing gases from the atmosphere and ground to chemically react
with minerals
by seeping into the soil and dissolving the minerals in roc
by absorbing sulfur oxides and creating acid precipitation
by seeping into the cracks of rocks and freezing
- 13. Multiple Choice
Which storm most likely develops as air masses interact with the warm water in the northwest Pacific Ocean?
typhoon
tornado
blizzard
monsoon
- 14. Multiple Choice
Nonnative flathead catfish that prey on smaller fish were accidentally introduced into the Yadkin River in North Carolina. What is the most likely effect these catfish could have on the ecology of the Yadkin River?
They could reduce native fish populations.
They could decrease water flow in the river.
They could damage streambeds and shoreline.
They could increase pollution in the water.
- 15. Multiple Choice
How could the introduction of a nonnative species of plant affect an ecosystem in North Carolina?
It could pollinate the native plant species, producing a disease-resistant
species.
It could reduce the competition for space and light with native plant species.
It could take over the habitats of the native plant species.
It could cause some insect species to destroy native plant species.
- 16. Multiple Choice
A company has several factories around the world and has decided to transition from burning fossil fuels to using alternative energy resources. How could a decrease in burning fossil fuels impact the atmosphere?
It could decrease the oxygen levels of the atmosphere.
It could increase the nitrogen levels of the atmosphere.
It could decrease the carbon dioxide levels of the atmosphere.
It could increase the sulfur dioxide levels of the atmosphere.
- 17. Multiple Choice
Kudzu, a vine covering many acres of North Carolina, was introduced to the United States in 1876 to control erosion. Over the years, scientists found that kudzu creates problems by growing rapidly and preventing other plants from getting sunlight. Which best describes kudzu?
a noncompetitive species
an invasive, nonnative species
an agent of erosion
an abiotic factor
- 18. Multiple Choice
One biome includes bearberry, a short plant with small, waxy leaves, shallow roots, and flowers that bloom quickly in the short growing season. Another biome includes tall grasses that can survive fires due to roots that extend 6 to 7 meters deep during the long growing season. What is most likely true about the two biomes?
They have the same temperature range but different rainfall ranges.
They have the same temperature range and the same rainfall range.
They are at different latitudes but have the same temperature range.
They are at different latitudes and have different temperature ranges.
- 19. Multiple Choice
Biomes include both biotic and abiotic elements. Which set includes both biotic and abiotic elements of an estuary?
cordgrass, water salinity, great blue herons
ospreys, oysters, black needle rush
silt, air temperature, tidal pattern
periwinkles, bats, egrets
- 20. Multiple Choice
Which of these is a threat to the survival of an ecosystem?
predator-prey population cycles
less biomass at higher levels of the food web
shrinking variety of animal and plant species
competition among some consumer populations
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