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irina1246 [14]
3 years ago
6

WILL GIVE BRAINLIEST

Geography
1 answer:
inysia [295]3 years ago
6 0
Physical systems can affect human systems in many ways. Climate is one of the many ways. If a human lives in a very cold environment such as Alaska they can become very cold if they do not wear proper clothing and stay warm. The low temperatures can lower the body temperature and eventually can do so so much that the body will start to shut down due to hypothermia. However in contrary a human system can also affect a physical system. For example, if you had that same person in Alaska trying to survive the cold he might cut down a lot of trees for fire wood and to maybe build a shelter. Doing that could cause animals to loose their homes and also it will produce more heat causing the temperatures to potentially rise in Alaska. That is just a few examples of how human systems and physical systems play a role towards each other.
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A rugged area with large variations in elevation would have ______ relief, whereas a relatively flat location would have ______
Deffense [45]

A rugged area with large variations in elevation would have high relief, whereas a relatively flat location would have low relief.

Maps that capture data approximately alleviation are termed topographic maps. Maximum geologic maps include topographic information inside the form of contour strains.

Comfort is the distinction between lowest and highest elevation in a location. Only a few surfaces on the earth are genuinely flat. We describe deviations from flatness as relief.

Similarly to showing absolute elevation, contour strains, by means of their spacing, monitor the steepness of slopes at a look. On a steep slope, they have got close collectively.

To learn more about variation in elevation

brainly.com/question/1770232

#SPJ4

3 0
2 years ago
What is the most significant factor in determining how
irina [24]

Answer:

The longevity of the agricultural product is the most important factor when it comes to the closeness of the agricultural activity to the central market.

Explanation:

When it comes to agricultural activities, it is very important to take into consideration the type of product that is produced and its characteristics, so that the distance from the central market is adequate. This comes from the fact that not all agricultural products have the same reslience or longevity, and also they differ in how good they can bear transportation, changing temperature, etc.

Agricultural products that have short longevity and are not suitable for long-distance transportation should always be as close as possible to the central market as if they are not there will be big losses which doesn't do a favor to anyone. On the other hand, the agricultural products that have long longevity and are easy and not problematic for long-distance transportation can be produced far away from the central market without any problem.

5 0
3 years ago
I need help please?!!
Nitella [24]

Answer:

C

Explanation:

The human brain is often said to be the most complex object in the known universe, and there’s good reason to believe that it is. That lump of jelly inside your head contains at least 80 billion nerve cells, or neurons, and even more of the non-neuronal cells called glia. Between them, they form hundreds of trillions of precise synaptic connections; but they all have moveable parts, and these connections can change. Neurons can extend and retract their delicate fibres; some types of glial cells can crawl through the brain; and neurons and glia routinely work together to create new connections and eliminate old ones.

These processes begin before we are born, and occur until we die, making the brain a highly dynamic organ that undergoes continuous change throughout life. At any given moment, many millions of them are being modified in one way or another, to reshape the brain’s circuitry in response to our daily experiences. Researchers at Yale University have now developed an imaging technique that enables them to visualise the density of synapses in the living human brain, and offers a promising new way of studying how the organ develops and functions, and also how it deteriorates in various neurological and psychiatric conditions.

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The new method, developed in Richard Carson’s lab at Yale’s School of Engineering and Applied Sciences, is based on positron emission tomography (PET), which detects the radiation emitted by radioactive ‘tracers’ that bind to specific proteins or other molecules after being injected into the body. Until now, the density of synapses in the human brain could only be determined by autopsy, using antibodies that bind to and stain specific synaptic proteins, or electron microscopy to examine the fine structure of the tissue.

To get around this, the researchers designed a radioactive tracer molecule called [11C]UCB-J, which binds to a protein called SV2A, which is found exclusively in synaptic vesicles at nerve terminals, and which regulates the release of neurotransmitter molecules from them, a vital step in brain signalling. Other research teams have developed similar tracers that bind SV2A, but so far these have only been tested in rats, pigs and monkeys.

In order to determine that [11C]UCB-J is a reliable marker for synapse density, Carson and his colleagues injected the molecule into an olive baboon and scanned the monkey’s brain. This revealed that the tracer is taken up quickly by the brain tissue, becoming highly concentrated in the cerebral cortex, which consists largely of grey matter densely packed with synapses, but not in white matter tracts, which contains few or no synapses, within 6 to 16 minutes after the injection.

They then dissected the brain and took tissue samples from 12 different regions. Closer examination of these samples using antibody staining further revealed that SV2A levels correspond very closely to those of another protein called synaptophysin, which is considered to be the gold standard of synaptic density, and is used widely to estimate synapse numbers in brain tissue samples. Furthermore, SV2A distribution in the tissue samples was very closely correlated to the measurements obtained earlier by the PET scan, demonstrating that SV2A can be used to accurately measure the density of synapses.

Next, the researchers injected their tracer into five healthy human volunteers, and then scanned their brains, to obtain the very first images of synaptic density in the living human brain. The results were comparable to those seen in the monkey, with the radioactive signal peaking in the grey matter of the cortex within 6 to 15 minutes after injection, and then starting to decline steadily shortly afterwards.

Finally, they repeated this in three patients diagnosed with temporal lobe epilepsy. In all three, the scans showed decreased uptake of the radioactive tracer in the hippocampus, but only on that side of the brain that had previously been damaged by seizures. This not only confirms earlier reports that temporal lobe is associated with the loss of synapses, but also that [11C]UCB-J is sensitive enough to detect it.

Hope this helps darling!

6 0
3 years ago
Read 2 more answers
Types of Cultural Diffusion
Darya [45]

this is so long omg what class is this

8 0
3 years ago
How can you explain rock evidence of Pangea?
otez555 [7]

i. Using fossil evidences

ii. Similar rock lithologies at the edges of continent

iii. Climate clues

iv. Fitting of the continents into a puzzle

v. Sea floor spreading

Explanation:

Pangea was a super-continent on the earth which formed about 330 million years ago during the Paleozoic and began breaking up during the early Mesozoic, about 175 million years ago.

Most of the present day continents formed as a result of the separation of the Pangea in the early Mesozoic.

The first scientist to propose the existence of this super-continent was Alfred Wegener in 1912. He suggested the continental drift hypothesis to explain the separation of the land masses.

Today, the theory has been revised to the theory of plate tectonics which provides a better mechanism to understand the drifting of the continents.

Here are some of the evidences to support the existence of Pangea;

  1. Using fossil evidences: Mesosaurus, a reptile animal that lived during the Permian, was found in both South America and Southern Africa. Since this animal could not swim nor fly, only a jointed landmass could have made them present in both continents.
  2. Similar rock lithologies at the edges of continents: rock formations at the Western edge of Africa and South - Eastern part of Brazil matches with one another and have been believed to be once joined together.
  3. Climatic clues such as glacial tills that are confined to temperate and polar regions have been found in tropical regions.
  4. Wegener fitted the present day continent into a giant supercontinent and this provided a visual support for his claim.
  5. Evidences from sea floor spreading revealing magnetic reversals at divergent margins suggests the prevalence of plate tectonics i.e moving plates on earth.

This among many other evidences underscores the existence of a supercontinent called Pangea.

8 0
3 years ago
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