HMH Unit 10 Assessment

The number of Burmese pythons captured in Everglades National Park has risen from 5 in 2001 to 250 in 2007.

How has the change in the population of Burmese pythons most likely affected the native organisms in the Everglades?

• It has helped native organisms.

• It has led to overpopulation of the native organisms.

• It has made it more difficult for native organisms to survive.

• It has led to an increase in resources for the native organisms.

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A builder is interested in protecting crocodile habitats. The graph below shows which habitats crocodiles in Florida prefer. Based on evidence in the graph, where is the builder most likely to place a new housing development?

• coves

• ponds

• creeks

• shoreline

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NGSS.MS-LS2-1

The state bird of Florida is the Mockingbird. Mockingbirds eat many types of foods, including insects, berries, and seeds. Insects and seeds have hard coverings, but berries are soft. If the plants that make berries don't grow well one year, which individual Mockingbirds are most likely to survive?

• those who sing the loudest

• those with the strongest beaks

• those with the longest tail feathers

• those that lay eggs with the most spots

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Air is an important part of Earth’s environment that is necessary for life on Earth. Which of these activities is most likely to be harmful to the air?

• camping

• swimming

• burying toxic waste

• burning coal for energy

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NGSS.MS-ESS3-4

Organisms that live in coral reefs need warm, shallow seas to survive. Which of these environmental changes would be the greatest threat to coral reefs?

• a beaver dam

• open-pit mining

• rising sea water level

• using land for farming

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Lake Okeechobee is a habitat for many plants and animals. The figure shows how Lake Okeechobee could become polluted. What can you claim from this figure?

• The pollution of Lake Okeechobee results from natural disasters.

• The pollution of Lake Okeechobee is caused by weather patterns.

• Human activity is the cause of the pollution of Lake Okeechobee.

• Farm animals are the only source of the pollution of Lake Okeechobee.

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The kudzu vine was introduced to this country in the late 1800s. Today, it is common throughout most of the southeastern United States. Kudzu eventually kills other plants it covers because it blocks out sunlight. What can you conclude from this information?

• Kudzu is an invasive organism that can change an ecosystem.

• Kudzu is an illustration of a predator-prey relationship in a community.

• Kudzu is an example of a cyclic change where the forest land will eventually be restored.

• Kudzu is an example of a pollutant that is destroying forest ecosystems.

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Some animals can live close together in communities, but others require a lot of space. The table below shows the number of individuals of four different types of animals that can be supported by 25,000 acres of habitat. Based on the evidence below, which would you expect to disappear first if the habitat grew smaller due to habitat destruction?

Animal

Number per 25,000 acres

Black bear 1

Bobcat 60

Fox 165

Deer 580

• black bear

• fox

• bobcat

• deer

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Which of these graphs correctly shows what can happen to a native organism when an invasive organism successfully adapts to its new environment?

• 
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• 
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Phosphate is obtained in Florida by a process called open-pit mining. Which of these answers best describes open-pit mining?

• how humans can change an ecosystem

• how organisms can change an ecosystem

• how cyclic changes can change an ecosystem

• how natural disasters can change an ecosystem

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