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
harkovskaia [24]
3 years ago
14

Which of these is not a cause of desertification in the region?

Geography
1 answer:
mafiozo [28]3 years ago
5 0
'Climatic variations' and 'Human activities' can be regarded as the two main causes of desertification. removal of the natural vegetation cover(by taking too much fuel wood), agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.
You might be interested in
Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

7 0
3 years ago
In the mantle, heat is transferred as soft rock flows slowly in cycles known as ______ currents.
tankabanditka [31]
<span>In the mantle, heat is transferred as soft rock flows slowly in cycles known as convection currents. convection currents are the currents that are caused due to the process of convection. It is actually one of the three main process of heat transfer. The other two process of heat transfer are conduction and radiation. </span>
8 0
3 years ago
Read 2 more answers
Is a calfornia wine region a formal region, functional region, or perceptual region?
blagie [28]

Answer:

perceptual region

Explanation:

Hope this Help :)

5 0
3 years ago
The image shows a water feature.
kirill115 [55]

geyser, eruption, and heated ground water because they all describe what this thing is.


6 0
3 years ago
Read 2 more answers
Under different headings explain the impact and mitigation techniques of 1. Earthquake 2. Landslides 3. Tsunamis 4. Floods 5. Dr
natka813 [3]

Answer:

The impact and mitigation techniques are the following:

Explanation:

1. Earthquake: Earthquake cause severe damage to the building and infrastructure that leads to high deaths of people and losses to property. It can be mitigate by making more strong infrastructure and avoid making building in those region where earthquakes occurs.

2. Landslides: It also cause high damage to the soil as well as to the people by killing them. Vegetative cover and growing of trees on the edges of lands can reduce its frequency.

3. Tsunamis: It causes severe damage to the coastal regions and cause damage to the property as well as to the people. The damages can be reduced by making strong wall in the coastal regions. Vertical evacuation to existing natural high ground, tsunami-resistant structures are also mitigating techniques.

4. Floods: It causes great damages to both property, land and people. It can be reduces by making dams as well as reduce pollution that cause global warming.

5. Droughts: It can reduce the crop productivity of an area. Crop rotation.  Contoured row crops, Terracing and Tillage practices are the mitigating techniques used for drought.

6 0
3 years ago
Other questions:
  • A grid shows the positions of a subway stop and your house. The subway stop is located at (7, -7) and your house is located at (
    15·1 answer
  • 650% of 16 is what number
    14·2 answers
  • the volcanic lowlands were the source of obsidian, jade, and other precious metals like cinnebar and hematite that the mayans us
    11·1 answer
  • What is 18 percent of $450
    7·2 answers
  • The San Andreas fault is an excellent example of a _____ fault
    10·1 answer
  • GEOGRAPHY QUESTION :)
    11·1 answer
  • trace the journey of a piece of granite through the rock cycle. Explain how this rock could be changed from an igneous rock to a
    5·1 answer
  • How are women’s rights in Tunisia different from those in other Muslim countries?
    5·1 answer
  • Which term is best described by the following: the movement of material due to differences in density?
    9·1 answer
  • Describe what N Seoul Tower is known for
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!