Ask the question 1. Lake Baikal is the oldest lake on planet Earth, isn't it? 2. How old is it? 3. Is Lake Ontario deeper than lake Baikal? 4. When do the snows of Siberia come to Lake Baikal? 5. The ice don't get very thick in winter, do it? 6. Is the water in the lake warm? 7. Where does the lake lay? нужно ответить на вопросы