Advanced Placement (AP) High School

Which demographic transition stage has an age structure with the following characteristics: falling birth rates, falling death rates, small number of elderly people?

Stage 1
Stage 2
Stage 3
Stage 4

Answers

Answer 1

Answer:

Explanation:

The demographic transition stage that typically exhibits the characteristics of falling birth rates, falling death rates, and a small number of elderly people is Stage 2 of the demographic transition model.

In Stage 2, a society experiences significant improvements in healthcare, sanitation, and living standards. These advancements lead to a decline in mortality rates as diseases are better controlled, and access to healthcare improves. However, birth rates remain high, resulting in a rapid population growth.

During this stage, the age structure of the population tends to be dominated by young individuals, as the decline in mortality rates leads to a larger proportion of children surviving to reproductive age. The number of elderly people in the population remains relatively small because the declining birth rates have not yet resulted in a significant aging population.

It is important to note that the demographic transition model is a simplified representation of population dynamics, and real-world scenarios can have variations and overlap among stages. Additionally, different countries or regions may progress through the stages at different rates and have unique demographic patterns.

Answer 2

Answer:

Stage 2

Explanation:

Related Questions

Help :) Two pigs with curly tails breed and have six offspring. One of the piglets has a straight tail. What is the most likely explanation for this?

That piglet has a different father than the others.
A genetic mutation occurred in the gamete.
Something the mother pig ate during pregnancy caused it.
Mitosis occurred with more than one division cycle.

Answers

The most likely explanation for the piglet having a straight tail is that a genetic mutation occurred in the gamete.

Inherited traits, such as tail shape, are typically determined by genes passed down from the parents to their offspring. If both parent pigs have curly tails, it suggests that curly tail is the dominant trait in their genetic makeup. However, occasionally, genetic mutations can occur spontaneously, resulting in a change in the genetic information. These mutations can alter the expression of traits, leading to variations in the offspring.

In this case, it is likely that a genetic mutation occurred in the gamete (sperm or egg cell) of either the mother or the father pig, resulting in the piglet having a straight tail instead of the curly tail inherited from its parents. This mutation could have affected the genes responsible for tail shape, causing a deviation from the expected phenotype.

The other options mentioned—having a different father, the mother's diet during pregnancy, or multiple divisions in mitosis—do not typically explain the occurrence of a trait that deviates from the parents' traits in the same generation. Genetic mutations are a more plausible explanation for such variations in inherited traits.

A country has the following population statistics: CBR = 1. 0% CDR = 1. 0% immigration = 1. 0% emigration = 2. 0% What is the growth rate of the population in this country? T: (CBR + Immigration) - (CDR + Emigration) = Population Growth Rate A. 5% B. 10% C. - 18% D. -1. 0%

Answers

Answer:

-1.0%

Explanation:

T: (CBR + Immigration) - (CDR + Emigration) = Population Growth Rate

Substituting the given values, we get:

T: (1.0% + 1.0%) - (1.0% + 2.0%) = Population Growth Rate

T: 2.0% - 3.0% = -1.0%

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