<span>The part of the ear where sound wave compressions and
rarefactions cause the eardrum to vibrate is the middle ear. The 8th
nerve in the inner ear actually converts the mechanical energy to electrical
energy for transmitting to the brain. A membrane called the tympanic membrane
separates the middle ear from the outer ear. Whenever a sound reaches the ear,
it creates a sound wave that creates vibration in the eardrum. The pressure
when high pushes the membrane inwards while low pressure sound waves helps the
eardrum to come outwards. </span>
Answer:
Entropy of an isolated system either increases or remains constant. If there are no irreversibilities in an isolated system then its entropy will remain constant. But that is a hypothetical case. In real life case, there is always some irreversibility present in the system.
Explanation:
Answer:
The phrase "disease is an agent of natural selection" means that those individuals which carry specific genes to resist the disease will be selected by the nature, whereas those individuals which that don't have or not capable of developing resistance genes will be excluded.
It is a well-established fact that diseases (mainly outbreaks) are best action of nature to select only those individuals which can modify there genetic material and thrive against the changing environmental conditions. Let's take the example of Coronavirus outbreak (COVID-19) this year. From the statistics we know that old people that develop the disease are most likely killed within a few days. However, young people can develop immunity against the virus easily. Hence, nature selects young people and exclude older people. This natural phenomenon is however driven by the disease.
Answer:
Meiosis.
Explanation:
Humans have Diploid cells in our normal cells. However, sex cells contain Haploid cells. To make sex cells or gametes, meiosis needs to be performed(which multiplies the DNA and splits it into 4 daughter cells).
The correct option is B.
Idea models refers to those models that are used to show the relationships that exist between abstract concepts. The model is used basically to bring about desired changes and it normally used in business and other sectors to visualize how an idea might work out. Idea models are usually presented in form of graphs and equations, the variables in these graphs and equations show the relationships between the variables that are been considered.
