The answer is Ci. Iron, Magnesium and Zinc are all metals
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Answer: ACh
Explanation:
The Acetylcholine is an organic chemical that plays a major role in the brain and other parts of the body. It functions by transmitting messages from the brain to the various parts of the body.
It also helps in retaining memory as it enhances the alertness when we wake up. This hormone also helps in the sustaining attention and learning memory.
If the neurons stops producing acetylcholine then the brain does not retains information and is associated with memory loss.
Hence, the correct answer is Option B
Uneven aged trees are like the even aged but the only difference is that uneven aged trees are cut at various time and not at the same time. This is to promote regrowth of other trees by seeding and being a shelter for those undergoing regrowth.