7R- Human Impact on the Environment Review for Quiz

What do all living things need to survive?

• Food, water, shelter, and space

• Only food and water

• Shelter and space only

• None of the above

Answer explanation

All living things require food for energy, water for hydration, shelter for protection, and space to grow and thrive. Therefore, the correct answer is 'Food, water, shelter, and space'.

Tags

NGSS.K-ESS3-1

NGSS.K-LS1-1

Resources that limit population growth are called ________.

• limiting factors

• growth inhibitors

• population reducers

• expansion constraints

Answer explanation

Resources that limit population growth are known as limiting factors. They can include food availability, water supply, and habitat space, which directly affect the size and growth rate of a population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Carrying capacity is defined as:

• The maximum population size that an environment can sustain indefinitely.

• The minimum population size required for a species to survive.

• The average population size in a given habitat.

• The total number of species in a particular area.

Answer explanation

Carrying capacity refers to the maximum population size that an environment can sustain indefinitely, making it crucial for understanding ecological balance and resource management.

When the population stops growing, the ecosystem has reached its ________.

• carrying capacity

• equilibrium point

• maximum density

• saturation level

Answer explanation

When the population stops growing, it has reached its carrying capacity, which is the maximum number of individuals that an ecosystem can support sustainably. This is the point where resources are balanced with population size.

What does a healthy ecosystem consist of?

• Only plants

• Native plant and animal populations interacting in balance with each other and nonliving things

• Only animals

• Nonliving things only.

Answer explanation

A healthy ecosystem consists of native plant and animal populations that interact in balance with each other and their nonliving environment. This balance is crucial for maintaining biodiversity and ecosystem stability.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

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Which of the following can disrupt a healthy ecosystem?

• Forest Fires

• Rainfall

• Snowfall

• Sunshine

Answer explanation

Forest fires can devastate habitats, destroy vegetation, and disrupt food chains, leading to long-term ecological damage. In contrast, rainfall, snowfall, and sunshine are natural processes that typically support ecosystem health.

Tags

NGSS.MS-LS2-4

Which of the following can disrupt a healthy ecosystem?

• Invasive Species

• Native Species

• Endangered Species

• Protected Species

Answer explanation

Invasive species can disrupt a healthy ecosystem by outcompeting native species for resources, altering habitats, and introducing diseases. Unlike native, endangered, or protected species, invasive species are not part of the local ecosystem.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following can disrupt a healthy ecosystem?

• Pollution

• Clean Air

• Fresh Water

• Green Spaces

Answer explanation

Pollution can introduce harmful substances into an ecosystem, disrupting the balance of organisms and their environment. In contrast, clean air, fresh water, and green spaces support a healthy ecosystem.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following can disrupt a healthy ecosystem?

• Global warming

• Seasonal Changes

• Natural Growth

• Biodiversity

Answer explanation

Global warming can lead to drastic changes in climate, affecting species survival and habitat stability, thus disrupting a healthy ecosystem. In contrast, seasonal changes, natural growth, and biodiversity typically support ecosystem health.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Simple Recycling contributes positively to ecosystems by:

• reducing waste in landfills

• increasing carbon emissions

• depleting natural resources

• polluting water bodies

Answer explanation

Simple Recycling helps ecosystems by reducing waste in landfills, which decreases pollution and conserves natural resources. The other options, such as increasing carbon emissions and polluting water bodies, are negative impacts.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5