Answer:
degree of freedom is 2
Explanation:
We have here,
Physical activity classified as "positive attitude" or "negative attitude"
General activity level was classified as active, mildly active, and inactive.
Degree of freedom (Row-1)(Column -1) = (2-1)(3-1)=2
Therefore degree of freedom is 2
Answer:
A greenhouse is a building with glass walls and a glass roof. In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat.
Explanation:
It is always hard to say what the "initial" cause is- the initial cause
is always caused by something else. I'd say in this case that the
initial cause was the positioning of Soviet nuclean weapons on Cuba,
which was a very tangeable threat to the US. The noticing of these
weapons by the US marked the start of the Crisis.
But you should
also see the positioning of the weapons on Cuba in a wider context of
the Cold war. Specifically, Cuba felt threatened due to the Bay of Pigs
Invasion in 1961 ( a year earlier) and this caused Cuba to invite
Soviet weapons as a protection.
