Answer:
b. Hiccupping is a vestigial reflex that suggests a common ancestry between humans and amphibians.
Explanation:
Hiccupping refers to an involuntary contraction of the diaphragm that usually occurs several times per minute. Some research has suggested that hiccuping is an evolutionary remnant of amphibian respiration. This is because the mechanism is remarkably similar to the way tadpoles gulp air and water across their gills. This would mean that hiccups exist due to an antecedent to modern lung respiration.
The organism that is recycling nutrients is bacteria.
The right answer is A.
The Hardy-Weinberg principle is a theory of population genetics, which postulates that within an (ideal) population, there is a balance of allelic and genotypic frequencies from one generation to the next.
For this equilibrium to be achieved, there must be no evolutionary forces such as mutations, migration, genetic derivatives, natural selection, the founder effect ...
Most of their diet was various meats, however as agriculture was developed they began to eat more grains/vegetables.
