Classify the structures as homologous or analogous, depending on their structure and function.
1.arms of humans and wings of bats
2.fins of dolphins and flippers penguins
3.legs of humans and limbs of elephants
4.feathers of birds and scales of reptiles they MUST go into these two categories

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

what questions are you talking about ?

hybridization actually occurs frequently in nature. evolution is derived from the process of hybridization that creates things with different traits. this leads to the species changing and evolution occurring. hope this : )

hello, ballerbaby1265. i would say that the child has had a concussion due to the fall and their symptoms. 60 beats per minute is normal in a child that is sleeping, but not while awake. two of the main symptoms of a concussion after are both sleepiness and being tired. i hope i have a great night.