Answer:
The correct answer is "change".
Explanation:
The missing options of this question are:
A. natural selection.
B. immutability.
C. survival of the fittest.
D. change.
The correct answer is option D. "change".
The scientific racism that was prevalent during Charles Darwin books publications was related to the concept of "pure races", and the association of the inheritance of the "superior attributes" related to these races. Darwin's ideas were incompatible to this scientific racism, since Charle Darwin theories support the idea of a constant change among all people attributes, produced by genetics behavior and exposure to environmental factors.
In the female pig reproductive cycle, more number of eggs are released during one ovulation cycle. That is why, the number of offsprings born is more. The father of the litter is same single animal only. Because the process of fertilization of sperms with the eggs released happen in a time duration of few hours only.
In case of humans as well, the father is same. This is because in human reproductive cycle, only one egg is released majorly, accept the case of fraternal twins where two eggs are released and both are fertilized by two different sperms, but again from the same father.
<span>Epithelial tissues is a basic type tissue lining the cavities of blood vessels and organs. Squamos, Columnar and Cuboid are the three types of epithelial tissues. Secretion, absorption, transport and sensing are the chief roles of epithelial tissues.</span>
<span>Among other parts, Cl-channels or Chloride channels hold a great importance in maintaining the proper volume of the cell. It is significant also especially cell proliferation and salt secretion.</span>
