Differentiate between deforestation and desertification

Answer: deforestation = cutting down of trees in large scale due to which it causes soil erosion. desertification = a process by which fertile land become desert ,typically as a result for drought, deforestation etc. Deforestation is defined as the cutting down or clearing of trees from a wooded area. ... If trees are removed, the area can become much warmer and drier, which may result in desertification, which is a transformation of once fertile land into desert.

Explanation:

In the Arctic, seals are one of the main sources of food for polar bears. As global warming melts polar ice, fewer seals can be found in the Arctic. As a result, polar bears will —

A. maintain a constant population.


B. decrease in number.


C. migrate to tropical regions.


D. increase in number.

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In the classification of organisms, which is the correct order of taxonomic groups from broadest to most specific?
A Order ----> Domain -> Genus
B. Class ---> Family -----> Order
Oc. Kingdom ----> Class -----> Phylum
D. Family ----> Genus ----> Species
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what is the role of PCR in DNA typing

Line B in the given graph represents the reaction with an enzyme added to substrates. How did the enzyme affect the reaction?

Which of the following virulence factors would most likely produce an organism that can hide within the host cell,
growing intracellularly?
A)invasins (Type 3 secretion system)
B)capsule
C)IgA protease
D)Opa protein

Organisms that live in simular environments, such as the ocean, often have the same adaptations. This is due to what​

Two students compare and contrast the composition of a plant and animals cells. Several observations are made during the investigation. Which observation is incorrect?
Plant and animal cell contain cell membranes.
Plant cell are contained within cell walls, while animal cells are not.
Plant and animal cells contain a nucleus.
Plant cell do not have cytoplasm.

Which statement describes an advantage of sexual reproduction over asexual reproduction?
A. Sexual reproduction results in more genetic variation in organisms than asexual reproduction.
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B. Sexual reproduction requires more time to produce organisms than asexual reproduction.
C. Sexually produced offspring are more dependent on their parents for survival than offspring produced through asexual reproduction.
D. Sexually produced organisms are more dependent on other organisms for reproduction than offspring produced through asexual reproduction.

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You can find the correct mass of a solid by using ________

Undigested material not absorbed by the large intestine forms what kind of waste?

Creates unique set of DNA.
Does Mitosis or meiosis? Or both

Food is useful to organisms because it contains ? Radiant energy, thermal energy, motion energy, chemical energy

plzzz helpppppppppppppp

In what phase does the water molecules have greater freedom of movement.

which statement is correct about the rocks in this location

Which of the following does the human digestive system break down for the body's cells to use for energy, repair, and growth?

Explain the differences between Earth’s crust, mantle, outer core, and inner core.

Laying eggs belong to which category of energy use? Maintenance, waste production, movement, growth and reproduction

Name the 2 types of muscle

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

PLEASE HELP! huntington’s disease (HD) is prevalent South Africa. Most of the families with HD have Dutch or British ancestry, which suggests they inherited the European HD allele. HD is believed to have first arrived in South Africa more than 300 years ago when Dutch colonists settled into the Western Cape in the 1600s. Thus, the prevalence of HD in South Africa is the result of the founder effect.

Mutations in the HTT gene cause Huntington’s disease. The HTT gene provides instructions for making a protein called huntintin. This protein plays a role in nerve cells in the brain. The HTT mutation that causes HD involves a DNA segment known as a CAG trinucleotide repeat. This segment is made up of a series of three DNA building blocks that appear multiple times in a row. Normally, the CAG segment is repeated 10 to 35 times within the gene. In people with HD, the CAG segment is repeated 36 to more than 120 times. An increase in the size of the CAG segment leads to the production of an abnormally long version of the huntintin protein. This causes the dysfunction and eventual death of neurons in certain areas of the brain. The more repeats, the more serious the disease is.

HD is inherited in an autosomal dominant pattern. There is both an adult onset (after reproductive age) and a juvenile onset pattern. People with adult onset typically have 40 to 50 repeats, while people with the juvenile form tend to have more than 60 repeats. Individuals who have 27 to 35 repeats do not develop HD, but they are at risk of having children who will develop the disorder. As the gene is passed on to offspring, the size of the repeat may lengthen into the range associated with HD.

Predict what will happen to the allele frequencies for Huntington’s disease in South Africa if there were a new mutation to the HTT gene that causes a reduction to the CAG trinucleotide repeat. Justify your prediction with evidence. Your response should include links to the sources of information gathered.

which of the following best describes a frameshift mutation. A. When a segment of nitrogen bases gets added into a strand of DNA. B. When a segment of nitrogen bases gets removed from a strand of DNA. C. When a segment of a chromosome gets removed. D. Both A and B.​

What are 2 ways yo conserve water

Nora owns a dog. The dog seems to be lethargic, so she takes her pet to a veterinarian. The veterinarian checks the dog’s heart rate and finds it to be 90 beats per minute. He checks the dog’s temperature and finds it to be 70 degrees Fahrenheit. What conclusion can be drawn about the dog’s condition? A. The pulse and temperature are both normal. B. The pulse is normal, but the temperature is below normal. C. The pulse is normal, but the temperature is above normal. D. The pulse is above normal and temperature is below normal. E. The pulse is below normal, but the temperature is above normal.

What makes Kingdom Protista unique compared to the other kingdoms?

Which is a nonrenewable resource used to heat homes?
O Wind
O Solar energy
O Natural gas
O Wood

Why are photosynthetic organisms, such as plants, so important to life on earth

On the graphs, the dashed line represents the original population, and the solid line represents the population after natural selection has taken place. A population of snails is going through disruptive selection as it relates to their shell patterns. Which graph represents the population? A B C D

What did the orbiter do for 5 months once it reached the planet? ​ ​