True
Because one of the environmental catastrophes is dust bowl
The reason is that something changed that caused them to be unsuccessful in their environment.
Sorry if it is not right.
The correct answer is It would be more difficult for DNA to unzip since it would require more energy to break the bonds.
That is because it would most probably be a covalent bond and such a bond is stronger than a hydrogen bond which means that more energy would be needed to break it.
