What are the best ways not to contract Covid-19?, What Covid-resistant strategies can we use?, Do you know any endangered species? , What insects can transmit different diseases?, How can people tackle a problem of hunger in the world?, What are favourite means of transport?, How can people eradicate/wipe out hunger in the world?, How can we prevent animals from dying out?, What is the keystone to success?, What can be the country's economic keystone?.

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