Direction of the Earth’s axis changes over time. The Earth wobbles like a top on its axis 26,000 year cycle A. eccentricity
B. Obliquity
C. Precession
D. None

Any sound above what db can cause hearing loss in human beings

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Which factor that affects biodiversity?