Human Effects on Ecosystems-7&9-Advanced-Pre-Test

During a forest fire an entire valley is

burnt to the ground. All organisms were

destroyed but the following spring

grasses and small flowering plants grow

in the valley. What is this an example

of?

• Primary succession

• Secondary succession

• Aquatic succession

• Climax Community

Organisms that enter an ecosystem from somewhere else and disrupt the native ecosystem:

• resilience

• omnivores

• invasive species

Removal of all trees from an area of wooded habitat:

• invasive species

• deforestation

• succession

When water was drained from a marshland the biodiversity decreased. A design solution was implemented in the year 2005. Which observation provides evidence that the design solution helped increase biodiversity?

• The number of species of plants in the marshland rose from 15 to 37 in the ten years after 2005.

• Before 2005, most of the birds in the marshland were smaller species.

• The water level in the marshland rose 5 meters between 2005 and 2015.

Introduction of a non-native species to a habitat can have adverse effects on the biodiversity of the habitat due to which of the following?

• The non-native is less well-adapted to the habitat as the native species.

• The non-native species competes for resources with native species.

• The native species interbreed with non-native species, creating hybrids.

Which of the following the the best example of a solution designed to decrease the negative effect of human activity on biodiversity?

• Treating wastewater for human consumption

• Putting limits on commercial fishing

• Monitoring changes in polar ice caps

A series of changes in species composition of a community over time:

• deforestation

• succession

• resilience

Which of the following is most essential in order to maintain the continued availability of essential resources?

• Preserving biodiversity

• High speed manufacture

• Large scale agriculture

Hemlock trees are found in parts of Tennessee along rivers and streams. Hemlocks are large trees like the the Redwoods in California. They are being invaded by the hemlock woolly adelgid. They are crucial in keep streams and rivers cool for the survival of trout and other coldwater species. What could be a good way to control or destroy this invader?

• Allow the birds in the area to eat the hemlock woolly adelgid.

• Allow the release of predator beetles who feed entirely on hemlock woolly adelgid.

• Try burning the hemlock woolly adelgid out of the trees.

Which of the following is a concern of deforestation? Check all that apply.

• It can have negative effects on soil quality.

• It can raise carbon dioxide levels by reducing the number of trees that can remove it from the atmosphere.

• It can compromise the availability of fresh water.

• It can lower Carbon dioxide levels.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5