They release carbon dioxide into the atmosphere. When animals die and start to decay aided by organisms called decomposers, carbon dioxide is also emitted into the atmosphere.
I don't really get your question sorry :(
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
The place where large number of energy is required for cells like in liver , in heart , in legs etc
..............4 is D and 6 is A
