Answer:
(a) warm air is forced upward where it cools;
(c) cumulonimbus or nimbo-stratus clouds form
(d) thunderstorms with heavy showers and gusty winds occur"
(b) air cools and sinks, pressure rises, rain stops;
Explanation:
- A cold for front is a denser air , as that forms under the warmer and lighter air mass and this causes a low pressure along the cold form and thus causes the formation of a thunderstorm where enough moisture is present and drop in temperature occurs and in the northern hemisphere the cold front shifts the winds to from the southwest to northwest clockwise.