Answer:
Gas makes things buoyant by making the volume of an object lighter than the surrounding fluid it is trying to displace.
Gas Buoyancy is useful in the following ways;
• Airships
• Steel ships and
• All floating and flying vessels
Explanation:
Buoyancy is the tendency of an object to float in a fluid such as air or water. It is a phenomenon that was theorized by the mathematician, Archimedes known as the Archimedes Principle.
It states that the upward buoyant force that is exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces.
The principle explains the reason why objects float and fly.
So, when an object is immersed in a fluid, it can float due to the upward force exerted by the fluid on the object. But for this to happen, the object has to weigh less than the fluid it is displacing.
This is where the use of a gas comes into play.
Because the object may be heavier than the surrounding fluid it is trying to displace, it is filled with a large amount of gas (usually hydrogen and/or helium) which is lighter. This makes the volume of the gas and the object put together lighter than that of the surrounding air.
This is what causes objects to float or fly
Answer:
Some diseases are more common in certain groups of people, such as Caucasians or African Americans because individuals in such ethnic groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and a particular genetic disorder may be more frequently seen in such groups if one of these shared genes contains a disease-causing mutation.
Explanation:
Some genetic diseases are frequently seen in certain ethnic groups like Caucasians or African Americans. Individuals in such groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and one of these shared genes may contains a disease-causing mutation.
Examples of certain genetic disorders that are more common in particular ethnic groups include the Tay-Sachs disease, which is more common in people of eastern and central Europe (Ashkenazi), Jewish or French Canadian ancestry and the sickle cell disease, which occur among people of African, African American, or Mediterranean heritage.
Some genetic disorders are more common in people whose ancestry can be traced to a particular geographic area. The factors that can lead to development of populations with very different genetic allele frequencies include their geographic origin, selection, patterns of migration, historic events, etc. Certain natural barriers like oceans and other water bodies, high mountains, large deserts, or major cultural factors had prevented communication and interaction between people. So mating was restricted within the group, and this produces genetic marker differences and differences in the presence of specific disease-related alleles.
The Medulla Oblongota is what determines your breathing rate :)
Medulla Oblongata is your answer :)
Good luck!
The correct answer is Phagocytosis type of endocytosis is the cellular process of engulfing liquid particles by the cell membrane.
Phagocytosis is a type of endocytosis in which large particles such as microorganisms and dead cells are ingested through large endocytic vesicles known as phagosomes. Phagocytosis is the process of detecting and absorbing particles larger than 0.5 m in size. The particle is internalized into the phagosome, a distinct organelle. This phagosome then undergoes phagosome maturation, which involves changing the structure of its membrane and the composition of its contents. The first step is to activate the phagocyte.
Step 2: Phagocyte Chemotaxis (for wandering macrophages, neutrophils, and eosinophils)...
Step 3: Phagocyte attachment to the Microbe or Cell.
Step 4: The Phagocyte consumes the microbe or cell.
Learn more about Phagocytosis here :-
brainly.com/question/11667538
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I thought it would of been D but I’m not sure now
