Because as trials go on scientists discover more information and alter the theories and that is why they are referred to as a "theory" instead of a scientific "law"
I would say gills and webbed limbs. If they are amphibious, then I would say webbed feet and webbed arms.
Answer: to best help them aid in what the need to live like the small and thin beak is good for digging in small and thin holes for worms
Explanation:
The large intestine produces feces.The feces then moves tot he rectum and is excreted through the anus.
Enhancers are eukaryotic DNA sequences that can be used to elevate transcription and have variable positions and orientations.
