Answer:One can easily assume a direct cause and effect relationship between a physical environment and an aspect of culture
Explanation: During the prehistoric and the earlier centuries human societies developed in isolation, there's no interconnection or much of communication between different groups and societies.
Knowledge sharing is not prominent, but in recent times people are more connected to each other,communities and countries interaction takes place through different forums, during the earlier centuries there are no mobile communication equipments,no Television set or the level of sophistication as it is today.
Draw a diagram to illustrate the problem as shown in the figure below.
h = height of the kite above ground.
By definition, the angle of elevation is

Therefore

Answer: 53° (nearest integer)
Answer : The change in enthalpy of the reaction is, -310 kJ
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The given main reaction is,

The intermediate balanced chemical reaction will be,
(1)

(2)

(3)

Now we will reverse the reaction 1 and multiply reaction 1 by 2, reaction 2 by 2 and reaction 3 by 3 then adding all the equations, we get :
(1)

(2)

(3)

The expression for enthalpy of formation of
will be,



Therefore, the change in enthalpy of the reaction is, -310 kJ
Wood is a poor conductor and therefore a good insulator keeping heat inside
Is there any chemical names listed ?