Name any two decomposers operation in our environment.

Give an example of body characteristics used to determine how close two species are in terms of evolution and explain it.

write chemical equations to show what happens when

(i) ethanol is heated with concentrated sulphuric acid at 443 K.

(ii) ethanol reacts with ethanoic acid in the presence of an acid acting as a catalyst.

(iii) an ester reacts with a base.

What is meant by a biodegradable waste?

Draw the structure of the hexanal molecule, .