Answer:
There is no exact answer for this question tbh.
Answer:
Because it is absorbed by conc . H . SO , to form ammonium sulphate.
The rubber band flies forward if on the back. If the thumb on the front t would smack back and hit your thumb
Answer:
Zn, Cu, Fe, Mn, Co, Mo
Explanation:
Biogenic elements are chemical elements constantly present in organisms and having definite biological significance(Bowen, 1966).
There are many of these biogenic elements in nature. Among the elements of the d-block, Zn, Cu, Fe, Mn, Co, Mo are worthy of mention among others.
Free ions of d- block metals are not found in the body. The elements are present in the form of bioinorganic complexes of the respective metals. They commonly exist as co-factors of proteins that carry out essential biological functions.
