The hominid that is described is <em>Australopithecus africanus</em>.
<em>Australopithecus africanus</em> is one of the extinct hominids. It lived approximately from between 3.2 to 2.1 million years ago, in the late Pliocene and early Pleistocene. It is a species that lived in Africa, but its total range is not well known as there is only four fossils from it found, all in the same region, in the southern part of Africa.
The <em>Australopithecus africanus</em> is thought to be the ancestor of the later <em>Homo habilis</em>, and it is also considered to be a direct ancestor of the modern <em>Homo</em> <em>sapiens</em>, though that is still debatable.
Answer:A) No; action potentials result in increased permeability of the plasma membrane to sodium.
Explanation
Action potential is generated when influx of sodium ions occurs through the voltage gated ion channels in the nodes of ranvier cells, into the axoplasm. Provided the stimulus is strong enough more Sodium gated channels open and Sodium ions move in.
As sodium pump only pump sodium ions out of the cells , and it is sodium inlfux that causes action potentia,l this does not cause action potential .
In addition ATPs hydrolysis which supply energy for the sodium pump does not lead to action potential.
There are two (2) apparent features that show that the boundary at label D is a convergent boundary. These features are the trench and the subducting plate
Explanation:
In a convergent boundary, two plates moving in opposing direction collide. The denser plate, usually the oceanic plate, gets subducted underneath the less dense plate usually the continental plate. Due to the enormous stress of the subduction, the plates usually warp downwards at the boundary hence the formation of a oceanic trench.
Another common feature of convergent boundaries is a volcanic arc which is a chain of volcanic mountains. These are formed because of the fissures that develop along the boundary due to the stress between the two plates. The subducted plate, as it dives into the mantle, melts and the magma rises through the fissures. At the surface the magma erupt into a volcanic mountain. Due to the numerous fissures along the boundary, several mountains (a mountain chain) will develop.