Answer:
The function of the pleura is to allow optimal expansion and contraction of the lungs during breathing. The pleural fluid acts as a lubricant, allowing the parietal and visceral pleura to glide over each other friction free. This fluid is produced by the pleural layers themselves.
Answer:
The correct option is C. Rare alleles tend to remain rare even when they are dominant.The distribution of a gene among individuals is determined by mating and environmental factors.
Explanation:
Most people believe that a rare allele would only be recessive. But this is not correct. A rare allele can be dominant. The frequency of an allele to occur in a population will depend on the environmental factors. The alleles which code for traits that are best suitable for living in an environment will be seen in more abundance. The frequency of an allele to occur in a population also depends on the breeding trends of the population.
The formula for hydrate indicates the number of water molecules that are attached to each formula unit of the compound. Forexample, nickel (II) sulfate hexahydrate is a green/blue solid that has six water molecules included in the crystal foreach Ni2+and each SO42-ion.Many common minerals are
<h3>What is a hydrate ?</h3>
Any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight.
- The best-known hydrates are crystalline solids that lose their fundamental structures upon removal of the bound water.
- Hydrates are formed when water and light end natural gases come into contact at certain temperature and pressure conditions
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<span>The ritual of strolling leisurely around a walkway is called a promenade. Did you know that the event known as high school prom originated from this custom of promenading? The word prom is derived from the word promenade. During a prom, people dress up and display themselves socially, just as people do when they go to a plaza in the Spanish-speaking world.
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