B: second level secondary consumer
When organisms evolve adaptive traits for one purpose while suffering poor performance in an unselected trait, genetic trade-offs occur. Our findings show that under various types of selection pressures, viruses frequently experience evolutionary trade-offs.
Thymine is the one that bonds with cytosine, and guanine and adenine are the other pair
Fishes and worms are different so in other words there systems such as reproduction system are not the same because they will not be able to mate