10-кл биология 1-зерт.жумс

18. What did you have for breakfast yesterday?
19. Where were you one hour ago?
20. We always drink tea in the morning.

Firstly,  it is a  war. due to the proliferation of nuclear weapons on the earth, which  are able to destroy a life on the planet, the problem of war and peace has become global. secondly, it is the global warming as well as the environmental pollution. every day the climate of the planet  is changing more and more, reserves of fresh water  are depleted, the environment is being  polluted. all this is the result of  human's activities, and if we continue to do this, the death of humanity within a few generations is inevitable. poverty, famine and homelessness are the causes of death for many years. to date, the number of people suffering from hunger and malnutrition has  reached 1 billion people. it creates a serious threat to the international security. the last thing i would like to say is about endangered species of animals and plants. their habitats are being destroyed. this is due to global warming, logging, fire, mining. to sum up, it is necessary to make conclusions about the global problems of extinction of organisms.