Each year over new organic compounds are produced.
1,000
10,000
100,000
1,000,000

100, 000

Explanation:

An organic compound is a chemical compound in which one or more atoms of carbon are covalently bonded to atoms of other elements, majorly that of either hydrogen, oxygen or nitrogen. Because of the vast importance and uses of organic compounds, they can be synthesised from petrochemicals to meet up the demands..

b) mutualism

hope this : )

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong