85. Physicist Hawking believes: "The danger of life on the planet being destroyed by a certain disaster is increasing at an unprecedented rate, such as sudden global warming, nuclear war, genetic viruses or other dangers. " Hawking based on this view More and more unsuitable for human habitation, and put forward the view of "space immigrants". Which of the following questions best question Hawking's point of view? ['Most planetary environments are not suitable for human survival.', 'The dangers facing humanity can be solved through the joint efforts of human beings.', 'arth is in its infancy at the age of its life.', 'The habitable surface area of the earth is too small to withstand devastating disasters.']