1) it is a known fact that during the history of the earth there were periods of dramatic climate changes which occurred naturally, ice age among them. why do you think scientists are so much concerned about the current climate changes? 2) can you say that the climate in the place where you live is changing? how? do you find these changes for the better or for the worse? can you give examples of climate changes in other places of the planet? 3) do you think the humankind can solve the world's ecological problems? if so, in what way? 4) can individuals help in this area? how?