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Ecosystem

Quiz by maricel madalura

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5 questions
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  • Q1

    Consider the following statementsregarding “Earth Hour”:

    I. It is an initiative of UNEP and UNESCO

    II. It is a movement to raise awareness about climate change and the need to save the planet

    III. It is a movement in which the participants switch off the lights for one hour on a certain day

    Iand III only     

    Iand II ONLY

    .II and III only

    I,IIand III  

    30s
  • Q2

    Which factor best explains why the human population has grown so rapidly over the last 1000 years?

    Humans have increased the carrying capacity of the biosphere for the population

    humans have developed physical characteristics that increase their competitive advantage

    humans have increased the number of resources available on Earth

    humans have decreased their reliance on natural resources

    30s
  • Q3

    . If the population species of a given area is doubled, what effect would this have on the resources of the community?

    Competition for resources would increase as resources decline

    Competition for resources would decrease as resources decline

    No competition for resources

    Betterrelationships will occur

    30s
  • Q4

    In a population, limiting factors and population density are often related. Suppose that the population density of plant seedlings in an area is very high, explain how limiting factors may affect population density.

    The lesser the population density, the lesser the effect of limiting factors

    The greater the population density, the greater the effect of limiting factors

    . The greater the population density, the lesser the effect of limiting factors

    The lesser the population density, the greater the effect of limiting factors

    30s
  • Q5

    Which will NOT happen when trees are cut down in a forest ecosystem?

    Plants and animals living in the forest will lose their habitats

    Soil erosion increases

    Plants and animals living in the forest  will decrease in the number

    New species of plants and animals will be discovered

    30s

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