What characteristics of sexual reproduction has specifically favored the survival of animals that live on land?

Which of the following terms describe a liquid molecule that has only single bonds between its carbon atoms

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna

Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)