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Feliz [49]
2 years ago
15

How does the dust bowl relate to human use and abuse of soil?

Biology
1 answer:
vitfil [10]2 years ago
7 0

Answer:

Dust bowl resulted from extreme drying and loosening of the soil that resulted in soil erosion by wind. Thus, it can be related that poor agricultural practices like over plowing , over grazing and leaving the land barren are human activities that must have contributed to the dust bowl.

Explanation:

  • Dust bowl is referred to a period in early twentieth century when the the American and Canadian prairies faced severe dust storms.
  • These dust storms resulted from severe drought and failure of practices to prevent soil erosion.
  • Several people and livestock died as a result of choking.
  • Over plowing, removal of top soil and  small grasses exposed the soil to eroding winds and caused the dust storms.
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What is on a transplanted organ that causes the transplant recipient's body to reject it?
Delvig [45]

Answer:

Major histocompatibility complex (MHC) antigens

Explanation:

The process in which recipient body rejects the transplanted organ is called a allograft rejection or transplantation rejection.

A transplanted organ contains Major histocompatibility complex (MHC) antigens which are required to be accepted by the recipient's body to function properly but T cells in recipient's body become alloreactive and recognize MHC antigens (donor-derived antigens) as foreign and starts making antibodies against it. Which means the recipient's body is rejecting the  transplanted organ.

Hence, the correct answer is "Major histocompatibility complex (MHC) antigens".

8 0
3 years ago
Two pure substances combine to make a new substance. The new substance cannot be
jok3333 [9.3K]
Mixture should be the answer.
4 0
2 years ago
Gene expression might be altered at the level of post-transcriptional processing in eukaryotes rather than prokaryotes because o
Iteru [2.4K]

Answer:

<h2>As transcription and translation occurs in different location in eukaryotes, while in prokaryotes, both the processes occurs at same location,  post-transcriptional processing in eukaryotes. </h2>

Explanation:

The transcription and translation occurs in different location in eukaryotes, while in prokaryotes, both the processes occurs at same location and can be co-translation.

As, in eukaryotes, the transcription occurs in the nucleus and then this transcript have to move in the cytoplasm to translation, so before reaching in the cytoplasm, various modifications occur in this transcript known as post transcriptional modification or processing ( include 5' capping, 3' poly-adenylation and RNA splicing).

As, in prokaryotes, both transcription and translation occur at same place so there is no time for modification for transcript because translation starts as the transcription is still going on.

6 0
3 years ago
- A scientist is determining the age of a rock by comparing their position to other rock layers. By doing this, the scientist is
prohojiy [21]
The answer is b, for he is comparing the two rocks to find an age relative to the other
8 0
3 years ago
What is the major component missing from this food chain in order to see the flow of energy? A) there are no producers B) there
solmaris [256]

Answer:

The Green plants are missing in the food chain

Explanation:

Producers: The green plants since they produce their own food are also termed as autotrophs. They absorb energy from the sun to make their food. In ocean the phytoplanktons are the producers. In oceans the zooplanktons eat the phytoplanktons. Again the smaller zooplanktons eaten by larger zooplanktons and this eaten by fish. The fish is eaten by a bird. The tertiary consumer.

Consumers: It includes all organism eat something to survive. They might be herbivores and carnivores

Decomposer: The microbes bacteria and fungi converts dead matter into carbon and nitrogen which backs into the atmosphere.

5 0
3 years ago
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