Human Impact #1
7 months ago
markcampbell
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  • Question 1
    30 seconds
    Q.

    In some communities, forests are cleared through burning, and the deforested land is used for farming. Which of these is a negative consequence of this practice?

    answer choices

    Less sunlight reaching the ground

    Increased availability of soil nutrients

    Decreased plant and animal diversity

    Greater access to water for plants and animals

  • Question 2
    30 seconds
    Q.

    Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the MOST likely outcome for the ecosystem?

    answer choices

    Biodiversity would increase, and sustainability would decrease

    Biodiversity would increase, and sustainability would increase

    Biodiversity would decrease, and sustainability would increase

    Biodiversity would decrease, and sustainability would decrease

  • Question 3
    30 seconds
    Q.

    Which of these is a threat to the survival of an ecosystem?

    answer choices

    Competition among some consumer populations

    Less biomass at higher levels of the food web

    A shrinking variety of animal and plant species

    Predator-prey population cycles

  • Question 4
    30 seconds
    Q.

    Why is a reduction in biodiversity due to loss of plant populations especially destructive to an ecosystem?

    answer choices

    Plants are primary producers

    Plans have the most biomass

    Plants are resistant to disease

    Plants are part of the food web

  • Question 5
    30 seconds
    Q.

    Which of these explains why an

    ecosystem is healthy when it has a variety of species?

    answer choices

    An increased number of species allows for fewer food chains

    A larger number of species reduces competition for abiotic resources

    An increased number of species contributes to greater chances for adaptability

    A larger number of species allows for greater diversity in interdependence

  • Question 6
    30 seconds
    Q.

    Which of these living things in a grassland ecosystem depend on the presence of a variety of bacteria and other microorganisms in the soil?

    answer choices

    Worms Only

    Green plants only

    Plants and animals only

    All the organisms in the ecosystem

  • Question 7
    30 seconds
    Q.

    Which change in the environment would have a negative effect on the survival of a species in an ecosystem?

    answer choices

    Increase in the population of prey

    Introduction of a competing species

    Decrease in the population of predators

    Increase in genetic diversity of the species

  • Question 8
    30 seconds
    Q.

    New Zealand is home to many flightless birds, such as the kiwi, which build their nests on the ground. Over time, ground predators such as possums have been introduced. Which statement could be a possible effect on the kiwi?

    answer choices

    Possums could eat the eggs and reduce the number of kiwi chicks

    Kiwi could develop the ability to fly short distances to escape possums

    Possums could make the nests their home so the kiwi have to build new nests

    Kiwi could lay three times as many eggs to ensure the survival of their chicks

  • Question 9
    30 seconds
    Q.

    In the 1800’s, domesticated rabbits from Europe were brought to Australia. The rabbit population increased so quickly that it caused severe damage to agriculture and the natural environment. Even though scientists have tried to reduce the rabbit population, it continues to be a problem today. Which statement is the BEST conclusion from this series of events?

    answer choices

    Human actions can lead to imbalance in ecosystems

    Humans use technology to help organisms adapt to new areas

    Rabbit populations decrease when they are placed in new areas

    Rabbits from other continents cannot survive in different ecosystems

  • Question 10
    30 seconds
    Q.

    Nonnative plants can take over areas that were once populated by native plant species. Which abiotic process is LEAST likely to cause the invasion of nonnative plants?

    answer choices

    Flooding

    Weathering

    Dust storms

    Melting glaciers

  • Question 11
    30 seconds
    Q.

    When hunting by humans causes a species to becomes extinct, this may produce damaging effects throughout the ecosystem of the extinct species. What is the cause of this damage?

    answer choices

    Alternation of a food web

    Modification of a climate

    Reversal of a flow of energy

    Degradation of a habitat

  • Question 12
    30 seconds
    Q.

    Look at the diagram of a stream with toxic chemicals flowing into it. This diagram models how toxic runoff can pollute a stream and also

    answer choices

    Produce acid rain

    Cause soil erosion

    Create algae blooms

    Pollute groundwater

  • Question 13
    30 seconds
    Q.

    Which of the following will reduce a home electric bill?

    answer choices

    Using incandescent light bulbs in the lamps

    Keeping appliances plugged in when not in use

    Drying clothes on a clothesline on sunny days

    Using cloth rather than paper towels

  • Question 14
    30 seconds
    Q.

    Which two behaviors BEST demonstrate stewardship?

    answer choices

    Increasing consumption, discarding wastes

    Reducing consumption, discarding wastes

    Increasing consumption, recycling wastes

    Reducing consumption, recycling wastes

  • Question 15
    30 seconds
    Q.

    Coal is used for generating about 53% of the electrical energy in the US. Which of these environmental issues is directly contributed to the burning of coal?

    answer choices

    Beach erosion

    Air pollution

    Overfishing

    Ozone depletion

  • Question 16
    30 seconds
    Q.

    Using solar panels to convert solar energy into electricity may help slow the depletion of which resource?

    answer choices

    Sunlight

    Water

    Coal

    Copper

  • Question 17
    30 seconds
    Q.

    Turning off the light when leaving a room is an example

    answer choices

    Wasting energy

    Conserving energy

    Using potential energy

    Using chemical energy

  • Question 18
    30 seconds
    Q.

    Which would be a possible way to prevent wildlife species from becoming endangered?

    answer choices

    Drinking less water

    Cutting down more forests

    Establishing more habitats

    Stopping underground mining

  • Question 19
    30 seconds
    Q.

    The Miami Blue butterfly is an endangered species is South Florida. Which factor has MOST likely caused the population decline of this butterfly?

    answer choices

    Increase in the number of parks

    Decline in the amount of seawater

    Decline in the amount of predators

    Increase in the number of homes built

  • Question 20
    30 seconds
    Q.

    Which statement describes a harmful effect of clearing rainforests for farmland?

    answer choices

    Increase local groundwater levels

    Provides income for local residents

    Removes valuable habitat for local species

    Makes more land available for local farmers

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