The solar system is considered a natural system because it was made and controlled by natural forces, meaning, it was never influenced with human creations. It is considered as one of the products of the phenomenon of the physical world. Hope this answer helps you.
A. Hormones
secreted directly into the blood
Answer:
Option C
Explanation:
Option A is incorrect as mutations may be detrimental to the organism and are not always beneficial. Option B is incorrect as there are instances where mutations may enable organisms to be better adapted to the environment. Option D is incorrect as genotypes are not selected for or selected against by environmental pressures, it is only the phenotype (exhibitable/ visible traits) that can be selected for or against, hence option C is the answer.
Explanation:
As The Cell To Divide The Cell Make a Copy that make an Chromosome
The Chromosome are Called Sister Chromatids . The Sister are identical to the one another and are attracted to each other by Proteins Called Cohesins
