B) contraction of body hair muscles
C) thyroid hormones increase basal metabolic rate of cells in the body
D) blood vessels dilate and blood is directed to the superficial layers of the skin
Blood vessels dilate and blood is directed to the superficial layers of the skins is one way in which the body will react to maintain homeostasis.
Homeostasis is the set of self-regulation phenomena that lead to the maintenance of constancy in the properties and composition of the internal environment.
Control in blood flow is a response that reduces heat transfer and therefore maintains body temperature.
Thermoreceptors upon detecting an increase in body temperature, are activated and transmit this information to the hypothalamus that receives the information.
Blood vessels constrict to reduce the passage of "warm" blood to the skin, allowing it to be used in vital organs.
Blood vessels in the skin dilate as a result of increased body temperature, allowing molecules to separate and occupy more space.
In addition, it increases the amount of warm blood that flows from inside the human body, increasing blood pressure and transmitting heat to the outside environment more quickly.
This allows body temperature to be lowered, a notorious consequence of this dilation of the vessels is the reddening of the skin where there is greater flow and transfer of body heat.
Therefore, we can conclude that blood vessels dilate and blood is directed to the superficial layers of the skins is one way in which the body will react to maintain homeostasis.
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It depends on the nature of the crime. There could be foot marks there, or a certain of material found that is usually not found. There could be blood stains, or some genetic samples that could provide for DNA testing. There could be certain chemicals that could lead to identification of the substance used in the crime.
Answer:
You could find any number of things...shoe prints and maybe some tire marks. You might find shell casings, blood, broken glass, dropped items, etc. Some of these could be individual characteristics like the shoe prints, blood, or tire marks.
Increased fish predation
Increased marine bird migration distances
Increased marine mammal hibernation time
Answer:
Option (1)
Explanation:
The amount of carbon present in the ocean is inversely proportional to the pH level of water. This CO₂ amount present in the atmosphere may rise because of various types of human activities, that results in the increasing amount of dissolved CO₂ in the oceans. This in turn, again decreases the pH level of water. This water when reduces, it becomes saturated with the CO₂ and it also diminishes the source of calcium carbonate.
The increase in the ocean acidification leads to the significant reduction of the reef-building corals. As a result of which the temperature of the water increases and they are not able to assemble their skeletal parts.
Hence, the correct answer is option (1).
reproduction known as vegetative propagation. In the middle of the 1800s, a disease caused by a fungus
killed almost the entire lumper crop within two years. As a result, millions of people in Ireland died of starvation.
The most likely reason the potato disease was able to destroy the potato crop in such a short time is that the
(1) potato population lacked variations
(2) lumper variety had a long reproductive cycle
(3) lumper had several variations caused by vegetative propagation
(4) potato population in Ireland utilized all of the finite resources
The potato crop was likely destroyed quickly due to a lack of genetic diversity in the lumper potato population. All potatoes were virtually identical, thus none had resistance to the disease, leading to the rapid spread and devastation.
The reason the potato disease was able to destroy the potato crop in such a short time is likely option 1: the potato population lacked variations. In biology, this situation describes a lack of genetic diversity, meaning all individuals in the potato population were genetically identical or nearly so. Consequently, when the fungus that caused the potato blight appeared, it affected all lumpers in the same manner. If there had been more genetic diversity in the potato population, some individuals might have had natural resistance to the fungus and could have survived, allowing the population to recover more quickly.
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increased amount of water that is available to freshwater ecosystems