The Proliferation of a Number of Different Hominin Species After

question 74

Multiple Choice

The proliferation of a number of different hominin species after 3 million years ago may be a result of:

• A) ape extinction and the resulting creation of new niches
• B) general cooling of the planet and resulting expansion of the savannas
• C) the Pleistocene
• D) expansion of the forests after their low at the end of the Miocene

---

Definitions:

Capacitive Reactance

The opposition that a capacitor offers to alternating current (AC), which decreases as the frequency of the AC increases, calculated as 1/(2πfC) where f is the frequency and C is the capacitance.

Series Connection

A circuit configuration in which components are connected end-to-end, providing a single path for current flow.

Frequency Source

A device or circuit component that generates an oscillating electrical signal of a specific frequency.

Capacitive Reactance

The opposition to change in voltage across a capacitor, inversely proportional to the frequency of the applied AC signal and the capacitor's capacitance.