Why natural selection can not cross over organisms
1. Genetic Limits - small changes accur in a short time and big changes happen over a long period of time
Dog breeds have different characteristic but in the end, they are all dog.
Genetics run into how far they can go
Sciencist can not change organism from one to another. If they can't break the genetic barrier with intelligence, how can nonintelligent natueral selection do so?
2. Cyclical Change - so changes seem to cyclical, shifting back and forth in a limited range based off of weather and other shorter term environment changes. Not one direction as one would need to major organism changes
Natural selection may be able to explain the survival of a species but it cannot explain the arrival of a species
3. Irreducible Complexity - cells (molecular machines) must be completely formed in order to function:
Just like a car, can not created gradulally and still function
Imtermediates would be nonfunctional
Your body has about 3 trillion cells, each cell's parts are working together to function as a cell, all the cell working in unisen to function as one body
The complexity means a new life cannot come into existence by slight, incrementation successful changes over a long period of time