your answer for this question is B)
Answer: I would say the answer is D
Explanation: If population growth wanes the number of middle aged and younger people in the workforce drops. This slows down the production of many things leading to a plethera of problems. A good example of this is the current situation in Japan. They have virtually no population growth and an increasing amount of elderly with no care or support systems.
The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density
