1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erastova [34]
3 years ago
8

What are 5 factors that decrease populations (explain each or tell how that factor causes a decrease in a population).

Biology
2 answers:
lorasvet [3.4K]3 years ago
8 0

Answer:

Morality and Emigration

Explanation:

Mortality and emigration decrease the population. Thus, the size of any population is the result of the relationships among these rates. Natality, mortality, immigration, and emigration rates apply to every population, including the human population. The sum of these rates makes up the growth rate of a population.

egoroff_w [7]3 years ago
5 0
1) Agricultural Change:
agricultural changes have been massive over the past 400 years. Many of these agricultural changes even at a low level free up workers from the farms. This allows industrialisation which needs lots of workers and tends to promote high birth rates. The more regular supply of food from advanced farming also promotes birth rates, as people are sure they can feed their children, and reduces famine deaths.

2) Education:
Education plays a vital role in determining the levels of both birth and death rates in a country and hence the level of population growth. As education levels increase people tend to have fewer children so that they can focus their resources in improving the life chances of those few children.

3) Emancipation of women:
In many rich countries women have become over time free to work when they want within their life. This is not the case in all countries in the world where many women are stuck in gender specific unpaid work such as maintaining a household and subsistence farming plots. Women are much more likely now to go to university and work for a few years before having their first child. This can result in fewer children being born per woman as fertility declines with age for women.

4) Urbanization:
It has a significant impact upon population growth because it can impact upon the birth and death rates of a country. As a country becomes increasingly urbanised the birth rate tends to rise and death rates tend to fall.

5) Death rates:
Often death rates are reduced before a slowdown in birth rates, causing a boom in the population size at a certain point in a country’s economic development. Death rates fall and life expectancy increased.

i hope i could help u!! xx
You might be interested in
Question 1
noname [10]
1 - A ground level plant develops curling tendrils that wrap around other objects so it can "climb".

This is a species changing over time as it was originally a ground level plant but began to climb higher.

2 - Over many generations.

This is because diversity takes time and has to be integrated through generations; for instance, marriage. In a family, it becomes more diverse after the next generation as each generation is likely to marry someone of another ethnicity and allow the family tree to become more diverse.

3 - Mutate or Survive

It depends on what it means by mutate - develop a mutation to make it adaptable? If that's the case, then mutations within the DNA would be a result of adaptation and increase survival. Otherwise, survive is the obvious answer as adaption allows for species to move around and live longer.

Hope this helps!
4 0
3 years ago
Read 2 more answers
Which of the following would most likely contain carbon?
Alex Ar [27]
The right answer is salt
7 0
3 years ago
__________ fats or lipids form animal body fat that is used for stored energy and insulation.
Marizza181 [45]
<span>It is called saturated fats. These are fat molecules that have no twofold securities between carbon particles since they are soaked with hydrogen particles. Saturated fats are ordinarily strong at room temperature. Food that usually contains this fat is fatty pork, cream, butter and cheese. </span>
3 0
4 years ago
Read 2 more answers
How is an organism modified ?
zepelin [54]

Answer: genetic engineering

Explanation

Genetic engineering is the modification of an organism's phenotype by manipulating its genetic material. Some genetic engineering uses the principle of recombination. Recombination is the process through which a new gene is inserted into a bacterial DNA "The plasmid".

5 0
3 years ago
A sample compound with a molar mass of 34.00g/mol is found to consist of 0.44g H and 6.92g O. Calculate both empirical and molec
ipn [44]

Answer:

Empirical: OH

Molecular: H_{2} O_{2}

Explanation:

First of all, we are going to use the formula: mass = no. moles x Molar Mass And rearrange it to find No. moles: No. moles = mass/Molar Mass

Let's start with Hydrogen:

The given mass is 0.44g, and hydrogen's molar mass is 1.01, therefore the number of moles is: 0.44/1.01 = 0.4356

Now we do the same for Oxygen:

Given mass = 6.92, Molar mass of Oxygen = 16.00, No. Moles = 6.92/16.00 = 0.4325

Now we identify the smaller one (Oxygen as 0.4325 < 0.4356) and we divide both values by that number:

0.4325/0.4325 = 1

0.4356/0.4325 = 1.01

We round both to the nearest 0.2 or 0.25 (depending on what you're taught), and we get: 1 and 1.

This means that the empirical formula has one of each: OH

Now to find the molecular formula we find the relative mass of OH and divide the given mass by that:

M(OH) = 16.00+1.01 = 17.01

34.00/17.01 = 2

We now multiply both by this number to get:

H_{2} O_{2}

Hope this helped!

3 0
3 years ago
Other questions:
  • A student wonders whether removing the nucleus from a cell would result in a new prokaryotic cell. Why would this procedure fail
    15·2 answers
  • What physiological reasons would an animal have for choosing a specific environment over another?
    7·1 answer
  • An organism's genetic information is stored within the sequence of
    8·1 answer
  • Bones, joints, ligaments, and cartilage are parts of the
    12·1 answer
  • Superior and middle nasal conchae formed from its projections in
    15·1 answer
  • Space probes can
    12·1 answer
  • Cells in the leaves of plants contain specialized structures called
    10·1 answer
  • Te
    13·1 answer
  • Explain energy flow from producer to consumer.
    7·1 answer
  • Who loves Jonny sinns ?<br><br>vpd-jjzw-rub <br><br>Come see my dìçk​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!