Answer:
No
Explanation:
A knife is not a biotic factor because a biotic factor is a living organism that shapes its enviroment.
The answer is letter A. evolution always improves organisms. Darwin did not state this idea because he observed that even if evolution happened to species, there were some species that failed to adopt on the new environment. The other choices are his ideas of natural selection which states that an organism can survive if it has heritable traits that can adopt with the environment.
C) neural tunic
Another common name is retina
For the first one I’d say D
The answer for the 2nd one is C.
It is false cause the embryo develops the baby into whatever mammal offspring is being born
