Два предложения в zero conditional

Question

Два предложения в zero conditional

Answer 1

1) If you fly with budget airline, you have to pay for your snacks and drinks. 2)When unemployment is rising, people always tend to stay in their present jobs.

Answer 2

If you heat water to 1000 Celsius, it boils. -
Если нагревать воду до 100 градусов  Цельсия, она кипит.

If you drop a book, it falls.
Если вы уроните книгу, он упадет.