A placebo is kind of a "fake" treatment but, typically the person receiving a placebo is unaware it has no medical effect on them so they believe they are feeling better. For example, a lot of anxiety meds are placebos and people don't know so their brain tricks them into thinking they are feeling less anxious. This could be used in experiments where a group believes they are affected to see how they react
Upwelling is a process in which currents bring deep, cold water to the surface of the ocean. Upwelling is a result of winds and the rotation of the Earth. There are many reason's how could deep water upwelling increase organisms in an area, here are a few:
Biodiversity and productivity
Because the deep water brought to the surface is often rich in nutrients, coastal upwelling supports the growth of seaweed and plankton. These, in turn, provide food for fish, marine mammals, and birds.
Upwelling generates some of the world's most fertile ecosystems. A 25,900-square-kilometer (10,000-square-mile) region off the west coast of Peru, for example, undergoes continual coastal upwelling and is among the richest fishing grounds in the world. Overall, coastal upwelling regions only cover 1 percent of the total area of the world's oceans, but they provide about 50 percent of the fish harvest brought back to shore by the world's fisheries.
During El Niño, a weather phenomenon that typically occurs every three to seven years, the Pacific Ocean's climate changes dramatically. The transition zone between warm surface water and cold deep water deepens. Trade winds are also weak during El Niño. The combination of weak winds and deeper water limits upwelling. The reduction in nutrient-rich water leads to a lower fish population in the area, and therefore to a smaller fish crop.
Animal movement
Upwelling affects the movement of animal life in the area. Tiny larvae---the developing forms of many fish and invertebrates---can drift around in ocean currents for long periods of time. A strong upwelling event can wash the larvae far offshore, endangering their survival.
Coastal climate
The cold water welling up to the surface cools the air in the region. This promotes the development of sea fog. The city of San Francisco, California, is famous for its chilly, foggy summers, brought on by seasonal upwelling in the area.
Correct option A) None.
The male dwarf's father was of normal height; that is, homozygous recessive for achondroplasia. Consequently, the dwarf man of this exercise was heterozygous for the character (say Aa) because this condition is autosomal dominant.
He also has normal vision reason why he is X-NY and X-N which represents the X chromosome with the dominant N allele for normal vision. The woman is color blind and hence a homozygous recessive X-nX-n and of normal height.
Autosomal dominant helps to alleles harbored by any chromosome other than the sexual pair that show complete dominance over the recessive ones. Other diseases such as Huntington's disease, are autosomal dominant.
To learn more about homozygous recessive here
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They hypothalamus is responsible for the regulation of certain metabolic processes and other activities of the autonomic nervous system. It controls body temperature, hunger, thirst, fatigue, sleep etc. It is located in the brain below the thalamus.
Answer:
two off spring cells with the same genetic material as the parent cell is the answer
Explanation:
now if the off spring is only a bit identical to the parent it is known as a half genetic cell
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