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  • What does the word “population” mean?
    Number of animals in a zoo
    Number of homes in a city
    Number or people in a place
  • Why is gravity important for humans?
    To stay healthy and on the ground
    To breathe better
    To eat food
  • What does the author mean by "There's no other place like Earth"?
    Earth is not a good place anymore
    Earth is special and cannot be fully replaced
    Other planets are exactly like Earth
  • What is one advantage of space stations?
    They are cheaper than houses
    They are made of glass
    They are near Earth
  • Why is it difficult to live on Mars or Venus?
    Because they have too many people
    Because they are too colorful
    Because they don’t have enough oxygen
  • What is the predicted population of Earth by 2100?
    5 billion
    9 billion
    11 billion
  • Why might humans need a new home in the future?
    Because Earth is becoming too crowded
    Because people want to visit space
    Because the Moon is better than Earth
  • What is one disadvantage of space stations?
    Too much oxygen
    Too much water
    No gravity
  • Match the word to the correct definition: What is gravity?
    The air we breathe
    The force that keeps us on the ground
    The heat from the sun
  • Which sentence has a modal verb?
    Earth is big.
    The people are healthy.
    We can build these near Earth.
  • Change this to past simple: “People will need to stay inside all the time.”
    People will stayed inside.
    People needed to stay inside all the time.
    People need to stay inside.
  • Why is Venus not a good place to live?
    Because it is too hot and has little oxygen
    Because it has too many people
    Because it’s full of flowers
  • Which sentence is in the future tense?
    People live in space.
    The world’s population will reach 11 billion.
    eople are living in stations.
  • Which planet is too hot for humans?
    Saturn
    Mars
    Venus
  • "Life on Mars may be difficult because the __________ is very cold and there is not enough __________ in the air."
    Temperature, people
    Gravity, heat
    Temperature, oxygen
  • Which planet has gravity similar to Earth's?
    Jupiter
    Mars
    Venus
  • What is oxygen?
    A type of food
    A space station
    A gas we need to breathe
  • What does the author think about the idea of a new home for humans?
    It’s strange, but very exciting
    It’s boring and scary
    It’s impossible and dangerous
  • Which two planets are mentioned as possible new homes?
    Mars and Venus
    Mercury and Jupiter
    Earth and Pluto
  • Which one is a comparative adjective?
    Oxygen
    Hotter
    Station
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