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WorksheetsBiosphere Unit Test review
Total questions: 17
Worksheet time: 19mins
What would most likely happen if airborne pollution blocked the sun's rays so significantly that only 5% of plants survived?
The atmosphere would fill with oxygen, and animals would begin to die
All animals would evolve to begin using carbon dioxide as a food source
The atmosphere would fill with carbon dioxide, and animals would begin to die.
All animals would evolve to use a mixture of oxygen and carbon dioxide during respiration.
How would a reduction in the processing of fossil fuels impact society?
Petroleum products would become more expensive and pollution would increase.
Petroleum products would become less expensive and pollution would decrease
Petroleum products would be conserved and pollution would increase
Petroleum products would be conserved and pollution would decrease.
Which action does not demonstrate resource conservation?
Using paper plates
Collecting rainwater
Using a reusable water bottle
Turning off electric devices when not in use
North Carolina has more wind off its shore than any other Atlantic Coast state. How could this resource be Best utilized to reduce carbon emissions and provide cleaner energy for the state?
Windmills could be installed to pump water to coastal cities and provide fresh water to nearby houses.
Windmills could be installed on roofs in the coastal region to generate energy for nearby houses and businesses
Offshore wind farms could be constructed to change wind patterns so that hydroelectric turbines turn more quickly
Offshore wind farms could be constructed to generate wind energy, which reduces fossil fuel use throughout the state
Which renewable energy method would be best implemented in Southern California, which receives little rainfall?
Geothermal
Hydroelectric
Solar
Wind
The graph shows then umber of hare and the number lynx in a specific ecosystem over time. Which hypothesis is Best supported by the data?
A rise in the lynx population caused a rise in the hare population
The hare population was limited by the number of lynx in the ecosystem
The lynx population was limited by the number of hares in the ecosystem
The hare popultion drastically decreased in the 1920s because of a decrease in the lynx population
Which human activity is most likely to cause global temperature increases?
Overfishing in coastal ecosystems
Burning fossil fuels to maximize energy poduction
Creating agricultural waste that runs off into a nearby river
Constructing new roads through an established neighborhood
Which is the most likely long-term effect of deferestation?
Loss of biodiversity
Ecological extinction
Increased number of predators
Significant increase in oxygen levels
The life cycle of a mosquito depends on the availability of standing or slow-moving water. If there is a lower-than-normal number of mosquitoes present in one area, which limiting factor is MOST likely the cause?
a severe drought
an abnormally mild winter
a reduction in pesticide usage
a decline in populations of insect-eating birds
What process do microbes use to convert nitrates to nitrogen gas?
denitrification
fixation
assimilation
nitrification
Which statement correctly describes part of the carbon cycle?
The amount of carbon in the soil increases when plants decay
The amount of carbon in the ocean decreases when fossil fuels are burned.
The amount of carbon in the atmosphere decreases when igneous rocks form.
The amount of carbon in the atmosphere increases when photosynthesis occurs.
Which statement correctly describes a soil interaction in the carbon cycle?
Microbes breaking down organic matter in the soil release carbon dioxide.
Decaying organisms in the soil absorb carbon dioxide.
Plants growing in the soil release carbon dioxide
Plowing of the soil absorbs carbon dioxide.
The aphid is a small, soft-bodied insect that is a major pest to many plant species, including food crops. During the larval stage, lacewing larvae can eat between 100 and 600 aphids each. Commercial farmers may introduce lacewing insects into their fields as a means to control the aphid population based on which relationship between the two organisms?
parasitic
mutualistic
predator/prey
producer/consumer
Scientists study rainforests as systems structured in vertical layers, or strata.
Rainforest Strata Overstory (or Emergents) up to 50 meters
Canopy 30–40 meters
Under canopy 15–25 meters
Ground layer 0–10 meters
How would a tree falling from the overstory layer MOST immediately affect the surrounding plants in the other three layers?
They would have access to more sunlight but less space
They would have access to more sunlight and more space
They would have access to less sunlight but more space
They would have access to less sunlight and less space.
An ecosystem is MOST likely to return to its original condition after which of these occurs?
New predators are introduced to control a pest population.
A marsh is filled in to make space for a new parking lot.
Tall prairie grass burns after being struck by lightning.
Flood waters erode the banks of a narrow stream.
What will most likely be the result as humans move into new areas, forests are clear cut and housing developments are built?
Global temperatures will decrease because trees are removed
Many organisms will lose their homes because their habitats have been destroyed.
Better sanitation in the area will reduce the amount of pollution
The rainfall in the area will increase because there will be increased runoff.
What activity most contributes to the depletion of the ozone layer?
Burning fossil fuels
Release of CFCs
Deforestation
Overuse of fertilizer
