the characteristics of continental tropical air masses are Cool, moist air
I am not sure about the second one but i think it's forms at high altitudes or covers all or most of the sky but most likely covers all or most of the sky.
Extra for Stratus clouds: More specifically, the term stratus is used to describe flat, hazy, featureless clouds of low altitude varying in color from dark gray to nearly white. The word "stratus" comes from the Latin prefix "strato-", meaning "layer". Stratus clouds may produce a light drizzle or a small amount of snow.
As millions of Americans switch to the new diet, we can expect a(n) _decrease____ in the __demand for___ beef, leading to a shift to the __left___ in the __demand___ curve for beef and _lower____ beef prices.
