Which of the following groups of people most likely represents a snapshot in time of a human society that existed 12,000 years ago?

a) 75 adults, 10 children
b) 150 adults, 30 children
c) 10,000 adults, 3,000 children
d) 300 adults, 100 children
e) 50 adults, 20 children

B) 10000 adults, 3000 children

Explanation:

The context of snapshot in time here implies an impression or view of something briefly.

The human society that existed 12, 000 years ago can be referred to the Paleolithic or Old Stone Age. Humans later discovered that they could control the growth rate of certain plants and animals. This discovery led to more human activities and more food were available, thus an increase in human population.

Not until 50, 000 years ago, lifestyles changed  little from that of old humans. But due to technological advancement, lifestyles started changing 50, 000 years ago.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.