Final answer:
The prefix for a low-lying cloud is 'Strato-'. This pertains to clouds formed in layers, often seen in the troposphere where most weather phenomena occur.
Step-by-step explanation:
The prefix for a low-lying cloud is Strato-. This prefix is used to describe clouds that form in flat, wide layers or sheets. The prefix comes from the Latin word 'stratum,' meaning a layer or covering. The stratus clouds typically form at low altitudes and are a common type of cloud seen in overcast weather.
They can lead to light drizzle, rain, or snow. Atmospheric wind and weather are confined to the lowest layer of the atmosphere, known as the troposphere, which extends up to about 12 km high. Here, clouds are categorized based on the altitude at which they typically form, with stratus clouds being part of the low-level cloud group.