Desertification is cause by___

A) temperature variations

B) solar heating patterns

C) leaching of the soil

D) human activity

Answers

Answer 1

Answer:

human activities ......

Related Questions

ACT GCA TTA- what is the complementary DNA strand?

Answers

TGA CGT AAT ( apple on the tree, car in the garage) give brainliest thx

What formed between Australia and Antartica? What was the result of this?

Answers

The answer is Gondwana Australia and Antarctica were once part of the same land mass which is a supercontinent known as Gondwana :) Pls mark as brainliest

Which two structures produce energy that cells can
use?
O A and B
OB and C
O Cand D
O D and A

Answers

Answer:

According to the plant cell scheme, the two structures that produce energy that cells can use are D, which corresponds to mitochondria, and A, which is a chloroplast, so the answer is D and A (fourth option).

Explanation:

In the plant cell —unlike the animal cell— there are organelles called chloroplasts, responsible for converting light energy from the sun into chemical energy. In addition, there are mitochondria, which also provide useful energy to the cell.

In the chloroplast, photosynthesis takes place, a process that during the light phase produces ATP and NADPH⁺ from solar energy. In the mitochondria, energy in the form of ATP is obtained from glucose, due to oxidative phosphorylation and the electron transport chain.

The organelles indicated in the diagram are mitochondria (A) and chloroplast (D), both responsible for producing energy for the plant cell.

Answer: D and A

Explanation:

_compounds do not contain carbon

Answers

Answer:

Inorganic compounds do not contain carbon

Explanation:

Can someone please answer my last question its in biology and 7th grade
its easy plz help, its due today!!

Answers

Answer:

yes please

Explanation:

what's the question

The zebra mussel is a highly invasive species that was accidentally introduced to the Great Lakes region of the United States in the 1980s. The map below shows the distribution of zebra mussels in 2010.

Answers

Answer:

you didn't ask a question

Explanation:

brainiest....Make up a humorous conservation law.

Answers

Answer:

Open season on dum dums (stupid people).

1. In my opinion I think water evaporation is like the law of conservation, because water changes form to vapor then comes back to Earth as rains have simply changes form in the cycle.
2. Well, a humorous conservation law… whenever a certain that energy changes form it turns into a food item. So then if you're ever stranded on an island without food all you have to do is convert enough energy and just like that you have burgers and French fries.


Hope this was helpful smh.

How can a shortage of nutrients harm organisms in an ecosystem? How can an excess of nutrients harm organisms in an ecosystem? Give an example of each scenario to support your answers.

Answers

Answer:

Explanation:

Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.

For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.

Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.

For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .

Summarize the three main reasons why energy is wasted at each trophic level. (use your own words)

Answers

Answer:

Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.

What do you think happens to the number and the branches of nerve cells as babies mature

Answers

As a child grows, the number of neurons remains relatively stable, but each cell grows, becoming bigger and heavier. The proliferation of dendrites accounts for some of this growth. The dendrites branch out, forming “dendrite trees” that can receive signals from many other neurons when babies get mature.

Use Demetri's results to explain how temperature affects enzymes

Answers

Answer:

As with many chemical reactions, the rate of an enzyme-catalysed reaction increases as the temperature increases. However, at high temperatures the rate decreases again because the enzyme becomes denatured and can no longer function. ... As the temperature increases so does the rate of enzyme activity.

Explanation:

For rats, black (B) is dominant over white (b), and short hair (L) is
dominant over long hair (). A heterozygous black, short hair female is
crossed with a white, short hair male. What is the probability of the
offspring to have black, short hair?
2/16
4/16
6/16
9/16

Answers

Answer:6/16

Explanation:the probability of a offspring to have black hair chances are 6/16

What is the correct answer?

Answers

Answer: Answer is B

Explanation:

How many H2O molecules are created from 1 glucose molecule in the electron transport chain. (cellular respiration)

Answers

Answer: 6 molecules

Explanation: Knowing that in the end, you get 6 molecules of water from one glucose molecule. In the electron transport chain, hydrogen atoms are being added to available oxygen in order to produce water.

A new variety of CHNOPS monster with purple skin was recently discovered in Houston, Texas. Purple skin is created by a specific protein made of the following amino acids: Asp-Arg - Cys, Using the amino acids given, provide a possible DNA segment these could have been coded from (Hint: Work Backwards)
A.GOU AGA ACA
B.OCCA TCT TGA
C.CCA TCT ACA​

Answers

Answer:

The answer is B

Explanation:

I had this question on my test last week

Help it's 7th grade science

Answers

Answer:

general practitioner

Explanation:

A nephrologist generally sees patients who are referred by their primary care physicians or general physicians for problems related to the kidneys

Which of the following best explains why aerobic respiration is more energy efficient than anaerobic respiration?

Answers

With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules. Thus, aerobic respiration releases much more energy than anaerobic respiration.

No plagiarizing from websites!
Many people feel the use of stem cells has great potential for scientific and medical progress, while others have been opposed to it. Today there is a great deal of debate about stem cell research using pluripotent stem cells from an embryo. Provide an argument for people in favor of continuing stem cell research. Include in your answer the uses of stem cell research and a suggestion for obtaining a source of stem cells without risk to life. (2 points)

Answers

Answer:

Stem cells can benefit humanity in a variety of ways, one, being the ability to develop into another cell. This is remarkable for people who have diseases and or health issues, requiring them to replace cells that they lack. Not only that, but they help treat diseases like stroke, heart disease and diabetes.

Feedback is always appreciated. Hope this helps you.

A(n) ______ is a procedure that a computer follows to complete a specific task. *
algorithm
biometric
machine learning
software

Answers

Algorithm is the answer

Answer:Is machine learning

Explanation:I know

4. Gravitropism is the plant's response to gravity.
___ shows positive gravitropism (with gravity), and ___ shows negative gravitropism (against gravity)

A stems; leaves

B stems; roots

C flowers; roots

D roots; stems

Answers

Answer:

It is C

Explanation:

I had this question on my test last week.

Answer:

The answer is C.

Explanation:

Gravitropism is the plant's response to gravity.  _Flowers_ shows positive gravitropism (with gravity), and _roots_ shows negative gravitropism (against gravity).

When creating a graph why is an appropriate tittle for a graph important

Answers

Answer:

Because when they look at the graph they look at the title to figure out what the graph is showing

Explanation:

If a plant with chlorosis is unable to perform photosynthesis, what products (include
BOTH) are not being made?

Answers

Answer:

Glucose and oxygen

Explanation:

Photosynthesis is the process by which the cells of green plants synthesize their own food in the presence of sunlight. Although photosynthesis consists of various steps, it generally combines carbon dioxide (CO2) and water (H2O) to produce glucose (sugar) and oxygen gas (O2). The equation is as follows:

6CO2 (g) + 6H20 (l) → C6H12O6 (aq) + 6O2(g)

In a plant that possess chlorosis (a condition characterized by yellowing of leaves due to lack of chlorophyll), photosynthesis will not occur. This ultimately means that the photosynthetic products such as GLUCOSE AND OXYGEN WILL NOT BE MADE.

In which phase of mitosis does the nuclear envelope disappear, chromosomes become visible, and centrioles begin to form mitotic spindles?
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

Answers

the answer to this question is Prophase

No two species can occupy the same niche in the same habitat at the same time

a. because of the interactions that shape the ecosystem.

b. unless the species require different abiotic factors.
because of the competitive exclusion principle.

d. unless the species require different biotic factors.

Answers

The answer is b hope it help

lunar eclipse? solar eclipse? ms Garcia’s students are studying the topics. they are making the model seen here.
1. what type of eclipse are they trying to model?
2. what does the golf ball represent?
3. explain, what must happen for this eclipse to occur

Answers

Solar eclipse


Ignore this need to get 20 characters

Answer:

1. The students are trying to model a solar eclipse.

2. The golf ball represents the moon in this context.

3. For this type of eclipse to be made possible, the both the Earth and the Moon must be in allignment with the Sun, while the Moon also has to be between the two.

What is the smallest living organism on Earth?

Answers

Answer:

Nanoarchaeum equitans

Explanation:

i hope this help

Select the correct answer from the drop-down menu. The lunar eclipse occurs during the _______ phase. A.new Moon B.full Moon C.first-quarter Moon D.last-quarter Moon​

Answers

Answer:

B. full moon

Explanation:

A solar eclipse occurs in the daytime at new moon, when the Moon is between Earth and the Sun, while a lunar eclipse occurs at night at full moon, when Earth passes between the Sun and the Moon.

Can I get Brainliest? TYSMMMMMMMMMMMMMMM

Answer:

the correct answer is . B

Explanation:

gases involved in photosynthesis of a plant and their roles ​

Answers

atmospheric oxygen- expelled as a waste product from the plant conducting photosynthesis, carbon dioxide- taken into the plant to go through photosynthesis and is used to make glucose.

Explanation:

Hope this helps. Please ignore my handwriting! I know it’s sloppy!

in a prokaryotic cell most ribosomes are ​

Answers

Answer:

floating freely in the cytoplasm.

Explanation:

Describe the events that occur during the cell cycle. Include what happens in each of the following stages: interphase, mitosis, cytokinesis.

Answers

Answer:

Cell cycle or cell division refers to the series of events that take place in a cell leading to its maturity and subsequent division. These events include duplication of its genome and synthesis of the cell organelles followed by division of the cytoplasm.

interphase-During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, reads its DNA, and conducts other "normal" cell functions. This phase was formerly called the resting phase.

mitosis-In cell biology, mitosis is a part of the cell cycle, in which, replicated chromosomes are separated into two new nuclei. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained.

Cytokinesis-Cytokinesis is the division of the cytoplasm in eukaryotic cells that produces distinct daughter cells. Cytokinesis occurs at the end of the cell cycle following mitosis or meiosis. In animal cell division, cytokinesis occurs when a contractile ring of microfilaments forms a cleavage furrow that pinches the cell membrane in half.

Explanation:

hope it helps u

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