C. a rise in blood carbon dioxide concentration
Explanation:
Negative feed back mechanism refers to the control mechanism in which a product of a particular pathway controls the switch on and switch off of that particular pathway.
Since breathing increases the blood oxygen concentration and lowers carbon dioxide concentration and pH. The sensors that regulate the breathing should respond to oxygen concentration as the carbon dioxide is the by-product of respiration and is responsible for increasing blood pH. Thus increased Carbon dioxide levels in blood is the only factor which will trigger breathing.
Answer:
I think the answer should be D
Explanation:
The answer to the question stated above is Duplication.
Duplication is one of the chromosomal mutation whereby <span> a segment of chromosome is copied twice, resulting in extra allele.</span><span>
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Chromosomal mutation involves the change in chromosome structure which changes the composition or location allele.
Other chromosomal mutation includes:
<span>Deletion - occurs when a segment of chromosome is broken off and lost. </span>
<span>Inversion - happens when a segment of chromosome is broken off and reattach itself in inverted position.
</span><span>Translocation - takes place when a segment of chromosome is broken off and reattach at different point. </span>
The answer would be C physical weathering because heat and the breaking of the rock can be the result of physical weathering, and the other answers would not make sense.
Biological weathering would be the breaking down of the object due to a form of life (incorrect answer),
erosion is the carrying away of something (incorrect answer),
and chemical weathering would be changing the identity of the substance(incorrect answer).
Association cortex, I'm not sure if it's the best answer but it's my answer tho.
