Question

Absolute/Chronometric dating is based on? O Radium leakage O Elemental decay O Biostratigraphy O Dendrochronology

Answer 1

1. Absolure/Chronometric dating is based on

D) Dendrochronology

Absolute or chronological dating includes revealing and finding out the age of objects, materials or events and is measured in calender years. The method uses several physical and chemical measures to find out when the materials or objects were used or made and in the case of events, when it occured. Since dendrochronology is used to study the age of trees (when it was formed) and the environmental conditions that existed then, it is an absolute dating method.

2. Habitual bipedalism in hominid/humans arose initially through

C) Mutation

This question has been subject to numerous debates, however most of the papers mention how, bipedalism gradually got selected through natural selection. The ability for exhibiting bipedalism is due to several/ a series of mutations and not just one as there are several supporting charateristics that are required to exhibit the behaviour.