The correct answer is D. The theory of natural selection provided a better explanation of the processes that were being observed by the scientists.They observed that the related species birds found on one island were slightly different from that of the other, and certain portions earth, have the species, which were not found anywhere else.
<em>A circadian rhythm /sɜːrˈkeɪdiən/ is any biological process that displays an endogenous, entrainable oscillation of about 24 hours. These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in plants, animals, fungi, and cyanobacteria.</em>
the correct answer is a)I only
What are "these" cells you are referring to?
1. In sexual reproduction, more variations are produced. Thus, it ensures survival of species in a population.
2. The new formed individual has characteristics of both the parents.
There are a couple more but i think these are the most important when you compare the two.
Im thinking C. The skeletal system but not 100% sure.