1. They have a slimy skin in which the oxygen gets dissolved. 2. The frog have lung instead of gills 3. They have enormous no. of nerves which help them to breathe through skin
"Identical twins come from a single fertilized egg, or zygote, that splits in two. Both halves contain the same DNA and eventually form two fetuses. But clones are formed in a different way. The first step in making a clone is to empty the DNA out of a fertilized egg".
-Google
That’s a dependable variable because it’s relying on something else.
