Answer:
B
Explanation:
The law of superposition states that rock strata (layers) farthest from the ground surface are the oldest (formed first)
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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.
Answer:
Relative dating is the technique to calculate the age of an ancient materials in comparison to another material's age. Layer A is less older, if layer B lies beneath it. Layer A may be 2.5 to 3 million years old.
Explanation:
Before discovery of radioactive carbon dating method, geologists make use of relative dating method in order to determine the age of rock or fossils. The relative dating procedure often referred to as stratigraphy. Though this procedure is not capable of predict absolute age or dating. In relative dating, is mainly based on the fact that the older rock layers will be deeper in respect to the less older rock layer.
Answer:
The correct answer is "True".
Explanation:
It is true that the major role of absorption in the ileum is to reclaim bile salts to be recycled back to the liver. The ileum is the final part of the small intestine, serving as the terminator of the ileocecal sphincter. The ileum is the final step of absorption in the small intestine and while most nutrients are absorbed in the jejunum, the ileum absorbs the bile salts and some vitamins, like vitamin B12.