Answer:
D. all of the above
Explanation:
Australopithecus (first ape-man): Australopithecus is considered as the connecting link between apes and man as they shared the characteristics of both. The fossil records shows that they appeared around 5 million years ago. <em>Australopithecus africanus</em> was about 1.5 meters high and had human as well as ape like features. It was with bipedal locomotion, omnivorous in their diet and had erect posture. It had human like teeth with small canines and large chewing teeth. The brain was more like an ape with the brain capacity of about 500 cc similar to that of an ape. He lived in caves, had projected brow ridges with no chin. Its believed that <em>Australopithecus africanus</em> gave rise to <em>Homo habilis</em> about 2 million years ago.
The earliest species of Homo genus is <em>Homo habilis</em>. They were skill full man also called as handy man or the tool maker. He had erect posture with bipedal locomotion. The teeth were like modern man. He was skilled and made tools with stones. Slowly with evolution the prognathous face changed to orthognathous in cro magnon (<em>Homo sapiens fossilis</em>).
Sedimentary rocks are formed by cementation and compaction
Answer:
<h2>K+ movement will be closed or blocked because the outside is more positive charged and K+ is a positive particle.</h2>
Explanation:
Resting potential of a neuron cell is a type of condition in which the neuron lives in rest that means there is no transmission of the impulse takes place. Such type of the condition occurs due to more negative charges inside the cell and more positive charges outside the cell. During this condition potassium ions are in higher condition inside the neuron and the concentration of sodium ions are high at outside of the neuron.
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