The correct answer is option D, Temporal isolation
Temporal isolation is the mechanism which prevents the mating of closely related species living in the same ecosystem. Basically the reproductive barriers prevent these species from interbreeding. Temporal isolation is a prezygotic barrier that causes “time isolation” between the breeding period of two closely related species. The difference in time could be “difference in time of day”, “ difference in season of mating”, “difference in months” and in some cases “ difference in years”.
Typhoid fever is most common in non-industrialized countries. Travelers to Asia, Africa, Eastern Europe, and Latin America are especially at risk. Salmonella typhi bacteria are shed in the urine or stool of infected persons, including chronic carriers. There are no known animal reservoirs for typhoid fever.
According to the Food and Nutrition Board, of the National Academy of Sciences, 10% to 35% of kilocalories should come from protein.
There are six classes of food, but the three majors ones, that are require in large quantity are carbohydrates, proteins and fats and oils. The Food and Nutrition board gave recommendation about the quantity of these classes of food that should be taken on a daily basis. It is recommended that, 45% to 65% of kilocalories should come from carbohydrates while 20% to 35% come from fat.
D is false, enzymes can be reused
they are useful in agriculture because of their genetic diversity
