Biosphere Review

An ecosystem is composed of biotic and abiotic components. Which of the following is an example of a biotic component?

• soil

• bacteria

• climate

• oxygen

An ecosystem is composed of biotic and abiotic components.

Which of the following is an example of an abiotic component?

• temperature

• fungi

• predators

• prey

Which is a biotic factor that could affect an ecosystem?

• dust storms moving through an ecosystem

• bacteria harming the health of organisms in an ecosystem

• large amounts of acid rain precipitation seeping into the soil in an ecosystem

• high levels of carbon dioxide entering the atmosphere within an ecosystem

Which describes an abiotic factor that could impact the diversity of an ecosystem?

• An increase in prey can impact the number of predators.

• The introduction of an invasive species can change the amount of available resources.

• An increase in the amount of acid rain can change the pH of the soil.

• The competition for food can impact the survival rate between members of the same species.

Which interaction of a biotic and an abiotic factor can help stabilize a forest area in NC?

• increased precipitation, reducing soil erosion in the area

• increased decaying organic material, adding nutrients to soil in the area

• decreased water salinity, reducing biodiversity of animals in the area

• decreased number of predators, allowing the number of prey to increase in the area

The biosphere can be described as all of the biomes on Earth.

Which are the required factors used to classify the different biomes

• temperature and precipitation of an area

• biotic and abiotic factors of an area

• latitude and longitude of an area

• the climate and vegetation of an area

How could a global decrease in plant diversity affect the biosphere?

• It could cause an increase in the amount of oxygen gas available for plants and animals.

• It could cause an increase in animal diversity in the biosphere.

• It could cause a decrease in animal populations in the biosphere.

• It could cause a decrease in the amount of water available for plants and animals.

Which action will most likely cause a negative impact on the biodiversity of a small region?

• planting native species in a bare field to attract wildlife

• draining a wetland for the development of a new park

• reducing the amount of pesticides and fertilizers used

• having a controlled burn to remove undergrowth of a forest

Why is it important to conserve the biodiversity of Earth?

• to decrease the amount of global predator populations

• to decrease the stability of major global ocean currents

• to increase the stability of ecosystems during environmental changes

• to increase the amount of nonrenewable resources located in the lithosphere

A disease causes the rabbit population to decline drastically. How would this decrease in the rabbit population impact the community?

• The mouse population would decrease.

• The grasshopper population would decrease.

• The fox population would decrease.

• The snake population would decrease