Environmental Science - Populations

The image above is a picture of a sage plant, Salvia leucophylla. The sage plant secretes toxins that will kill off surrounding plants in a circle around it. This inhibits the growth of nearby plants. Which of the following forms of population distribution is described?

• clumped

• uniform

• random

• selective

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NGSS.MS-LS2-1

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Look at the population graph of Paramecium in a test tube. Determine the carrying capacity of the paramecium in their ecosystem

• about 10 paramecium

• about 50 paramecium

• about 100 paramecium

• about 65 paramecium

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

The number of individuals that a particular area can support is called the

• Biotic Potential

• Survivorshop

• Community

• Carrying Capacity

Which dispersion pattern is most common in nature?

• Random

• Uniform

• Clumped

• All are equal

The Mississippi River Delta ecosystem is a wetland home to a large number of fish, birds, and other aquatic organisms. During the last century, this ecosystem has seen a decrease in wetland areas and species diversity due to land development, agriculture, and flooding. Conservation groups have been working to reconnect the Mississippi River with its floodplain and restore lost wetlands. Which of the following statements would result of restoring wetland areas in this ecosystem?

• an increase in the carrying capacity of the ecosystem for wetland organisms.

• an increase in a biotic factors that would cause organisms to develop new adaptations.

• the development of an ecosystem that will prevent invasive species from settling there.

• to prevent the organisms that live in this ecosystem from competing for food and shelter.

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NGSS.MS-LS2-1

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When the environment has reached its human carrying capacity, which of the following conclusions can be made?

• Growth and immigration rate is equal to death and emigration rate.

• Growth and immigration rate is less than death and emigration rate.

• Growth and immigration rate is greater than death and emigration rate.

• Growth and immigration rate is exponential to death and emigration rate.

Human activities and natural events can have a large effect on populations, biodiversity and ecosystem processes. How does the growth of the human population into rural areas affect the environmental quality of the native ecosystem?

• Human population growth produces new resources that benefit the native ecosystems.

• Human population growth in rural areas help organisms evolve in order to survive in harsher urban environments.

• Human population growth in rural areas creates additional waste that is put back into the environment and lowers environmental quality.

• Human population growth in rural areas creates additional living areas for humans to populate, which would increase the value of the land.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Based on the demographic transition model above, what stage of development would a country be in that is experiencing a stable increase?

• Stage 1

• Stage 2

• Stage 3

• Stage 4

The graph below shows changes in human population numbers over time.

Which of the following statements would predict a consequence of these changes?

• An increase in biosphere stability.

• decrease in the availability of natural resources.

• An increase in the numbers and kinds of organisms worldwide.

• A decrease in deforestation due to technological improvements.

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NGSS.MS-ESS3-4

Button cell batteries are used in small portable electronic devices such as watches, cameras, digital thermometers, calculators and toys. Although there are no federal regulations prohibiting throwing button cell batteries in the regular garbage, they should be recycled due to the hazardous materials contained within them. What is the best explanation for why these batteries should be recycled?

• Recycled batteries prevent companies from using resources to create new ones.

• Batteries absorb heat that can lead to forest fires if released and damage ecosystems.

• Batteries contain materials that if leaked into the environment can threaten populations.

• Recycled batteries allow companies to sell future batteries at a lower cost to the consumer.

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NGSS.MS-LS2-4

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